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Algebra Examples
Step 1
Step 1.1
Apply the reference angle by finding the angle with equivalent trig values in the first quadrant. Make the expression negative because cosine is negative in the second quadrant.
Step 1.2
The exact value of is .
Step 1.3
Apply the reference angle by finding the angle with equivalent trig values in the first quadrant.
Step 1.4
The exact value of is .
Step 1.5
Combine and .
Step 2
Apply the distributive property.
Step 3
Step 3.1
Multiply by .
Step 3.2
Combine and .
Step 4
Step 4.1
Combine and .
Step 4.2
Move the negative in front of the fraction.
Step 5
Use the Binomial Theorem.
Step 6
Step 6.1
Simplify each term.
Step 6.1.1
Use the power rule to distribute the exponent.
Step 6.1.1.1
Apply the product rule to .
Step 6.1.1.2
Apply the product rule to .
Step 6.1.2
Raise to the power of .
Step 6.1.3
Raise to the power of .
Step 6.1.4
Raise to the power of .
Step 6.1.5
Use the power rule to distribute the exponent.
Step 6.1.5.1
Apply the product rule to .
Step 6.1.5.2
Apply the product rule to .
Step 6.1.6
Raise to the power of .
Step 6.1.7
Multiply by .
Step 6.1.8
Raise to the power of .
Step 6.1.9
Raise to the power of .
Step 6.1.10
Multiply .
Step 6.1.10.1
Combine and .
Step 6.1.10.2
Multiply by .
Step 6.1.11
Multiply .
Step 6.1.11.1
Multiply by .
Step 6.1.11.2
Multiply by .
Step 6.1.11.3
Multiply by .
Step 6.1.12
Use the power rule to distribute the exponent.
Step 6.1.12.1
Apply the product rule to .
Step 6.1.12.2
Apply the product rule to .
Step 6.1.13
Raise to the power of .
Step 6.1.14
Raise to the power of .
Step 6.1.15
Raise to the power of .
Step 6.1.16
Cancel the common factor of .
Step 6.1.16.1
Move the leading negative in into the numerator.
Step 6.1.16.2
Factor out of .
Step 6.1.16.3
Factor out of .
Step 6.1.16.4
Cancel the common factor.
Step 6.1.16.5
Rewrite the expression.
Step 6.1.17
Combine and .
Step 6.1.18
Multiply by .
Step 6.1.19
Move the negative in front of the fraction.
Step 6.1.20
Use the power rule to distribute the exponent.
Step 6.1.20.1
Apply the product rule to .
Step 6.1.20.2
Apply the product rule to .
Step 6.1.20.3
Apply the product rule to .
Step 6.1.21
Simplify the numerator.
Step 6.1.21.1
Raise to the power of .
Step 6.1.21.2
Rewrite as .
Step 6.1.21.3
Rewrite as .
Step 6.1.21.3.1
Use to rewrite as .
Step 6.1.21.3.2
Apply the power rule and multiply exponents, .
Step 6.1.21.3.3
Combine and .
Step 6.1.21.3.4
Cancel the common factor of .
Step 6.1.21.3.4.1
Cancel the common factor.
Step 6.1.21.3.4.2
Rewrite the expression.
Step 6.1.21.3.5
Evaluate the exponent.
Step 6.1.21.4
Combine exponents.
Step 6.1.21.4.1
Factor out negative.
Step 6.1.21.4.2
Multiply by .
Step 6.1.21.4.3
Multiply by .
Step 6.1.22
Raise to the power of .
Step 6.1.23
Move the negative in front of the fraction.
Step 6.1.24
Multiply .
Step 6.1.24.1
Multiply by .
Step 6.1.24.2
Multiply by .
Step 6.1.24.3
Multiply by .
Step 6.1.24.4
Multiply by .
Step 6.1.24.5
Multiply by .
Step 6.1.25
Use the power rule to distribute the exponent.
Step 6.1.25.1
Apply the product rule to .
Step 6.1.25.2
Apply the product rule to .
Step 6.1.26
Raise to the power of .
Step 6.1.27
Multiply by .
Step 6.1.28
Raise to the power of .
Step 6.1.29
Raise to the power of .
Step 6.1.30
Cancel the common factor of .
Step 6.1.30.1
Factor out of .
Step 6.1.30.2
Factor out of .
Step 6.1.30.3
Cancel the common factor.
Step 6.1.30.4
Rewrite the expression.
Step 6.1.31
Combine and .
Step 6.1.32
Multiply by .
Step 6.1.33
Use the power rule to distribute the exponent.
Step 6.1.33.1
Apply the product rule to .
Step 6.1.33.2
Apply the product rule to .
Step 6.1.33.3
Apply the product rule to .
Step 6.1.34
Combine.
Step 6.1.35
Multiply by by adding the exponents.
Step 6.1.35.1
Multiply by .
Step 6.1.35.1.1
Raise to the power of .
Step 6.1.35.1.2
Use the power rule to combine exponents.
Step 6.1.35.2
Add and .
Step 6.1.36
Simplify the numerator.
Step 6.1.36.1
Raise to the power of .
Step 6.1.36.2
Factor out .
Step 6.1.36.3
Rewrite as .
Step 6.1.36.4
Rewrite as .
Step 6.1.36.5
Rewrite as .
Step 6.1.36.6
Raise to the power of .
Step 6.1.36.7
Rewrite as .
Step 6.1.36.7.1
Factor out of .
Step 6.1.36.7.2
Rewrite as .
Step 6.1.36.8
Pull terms out from under the radical.
Step 6.1.36.9
Combine exponents.
Step 6.1.36.9.1
Multiply by .
Step 6.1.36.9.2
Multiply by .
Step 6.1.36.9.3
Multiply by .
Step 6.1.37
Raise to the power of .
Step 6.1.38
Move the negative in front of the fraction.
Step 6.1.39
Multiply .
Step 6.1.39.1
Multiply by .
Step 6.1.39.2
Combine and .
Step 6.1.39.3
Multiply by .
Step 6.1.40
Move the negative in front of the fraction.
Step 6.1.41
Use the power rule to distribute the exponent.
Step 6.1.41.1
Apply the product rule to .
Step 6.1.41.2
Apply the product rule to .
Step 6.1.41.3
Apply the product rule to .
Step 6.1.42
Simplify the numerator.
Step 6.1.42.1
Raise to the power of .
Step 6.1.42.2
Rewrite as .
Step 6.1.42.2.1
Rewrite as .
Step 6.1.42.2.2
Rewrite as .
Step 6.1.42.2.3
Raise to the power of .
Step 6.1.42.3
Rewrite as .
Step 6.1.42.3.1
Use to rewrite as .
Step 6.1.42.3.2
Apply the power rule and multiply exponents, .
Step 6.1.42.3.3
Combine and .
Step 6.1.42.3.4
Cancel the common factor of and .
Step 6.1.42.3.4.1
Factor out of .
Step 6.1.42.3.4.2
Cancel the common factors.
Step 6.1.42.3.4.2.1
Factor out of .
Step 6.1.42.3.4.2.2
Cancel the common factor.
Step 6.1.42.3.4.2.3
Rewrite the expression.
Step 6.1.42.3.4.2.4
Divide by .
Step 6.1.42.4
Raise to the power of .
Step 6.1.42.5
Combine exponents.
Step 6.1.42.5.1
Multiply by .
Step 6.1.42.5.2
Multiply by .
Step 6.1.43
Raise to the power of .
Step 6.1.44
Multiply .
Step 6.1.44.1
Multiply by .
Step 6.1.44.2
Multiply by .
Step 6.1.44.3
Multiply by .
Step 6.1.45
Use the power rule to distribute the exponent.
Step 6.1.45.1
Apply the product rule to .
Step 6.1.45.2
Apply the product rule to .
Step 6.1.45.3
Apply the product rule to .
Step 6.1.46
Simplify the numerator.
Step 6.1.46.1
Raise to the power of .
Step 6.1.46.2
Factor out .
Step 6.1.46.3
Rewrite as .
Step 6.1.46.3.1
Rewrite as .
Step 6.1.46.3.2
Rewrite as .
Step 6.1.46.3.3
Raise to the power of .
Step 6.1.46.4
Multiply by .
Step 6.1.46.5
Rewrite as .
Step 6.1.46.6
Raise to the power of .
Step 6.1.46.7
Rewrite as .
Step 6.1.46.7.1
Factor out of .
Step 6.1.46.7.2
Rewrite as .
Step 6.1.46.8
Pull terms out from under the radical.
Step 6.1.46.9
Multiply by .
Step 6.1.47
Raise to the power of .
Step 6.2
Simplify terms.
Step 6.2.1
Combine the numerators over the common denominator.
Step 6.2.2
Subtract from .
Step 6.2.3
Add and .
Step 6.2.4
Reorder and .
Step 6.3
Simplify each term.
Step 6.3.1
Cancel the common factor of and .
Step 6.3.1.1
Factor out of .
Step 6.3.1.2
Factor out of .
Step 6.3.1.3
Factor out of .
Step 6.3.1.4
Cancel the common factors.
Step 6.3.1.4.1
Factor out of .
Step 6.3.1.4.2
Cancel the common factor.
Step 6.3.1.4.3
Rewrite the expression.
Step 6.3.2
Move the negative in front of the fraction.
Step 6.4
Simplify terms.
Step 6.4.1
Combine the numerators over the common denominator.
Step 6.4.2
Add and .
Step 6.4.3
Subtract from .
Step 6.4.4
Reorder and .
Step 6.4.5
Cancel the common factor of and .
Step 6.4.5.1
Factor out of .
Step 6.4.5.2
Factor out of .
Step 6.4.5.3
Factor out of .
Step 6.4.5.4
Cancel the common factors.
Step 6.4.5.4.1
Factor out of .
Step 6.4.5.4.2
Cancel the common factor.
Step 6.4.5.4.3
Rewrite the expression.
Step 6.4.6
Rewrite as .
Step 6.4.7
Factor out of .
Step 6.4.8
Factor out of .
Step 6.4.9
Move the negative in front of the fraction.