Pre-Algebra Examples

Add (2x+3)/(x+4)+(x-1)/(x^2+2x-8)
Step 1
Factor using the AC method.
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Step 1.1
Consider the form . Find a pair of integers whose product is and whose sum is . In this case, whose product is and whose sum is .
Step 1.2
Write the factored form using these integers.
Step 2
To write as a fraction with a common denominator, multiply by .
Step 3
Write each expression with a common denominator of , by multiplying each by an appropriate factor of .
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Step 3.1
Multiply by .
Step 3.2
Reorder the factors of .
Step 4
Combine the numerators over the common denominator.
Step 5
Simplify the numerator.
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Step 5.1
Expand using the FOIL Method.
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Step 5.1.1
Apply the distributive property.
Step 5.1.2
Apply the distributive property.
Step 5.1.3
Apply the distributive property.
Step 5.2
Simplify and combine like terms.
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Step 5.2.1
Simplify each term.
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Step 5.2.1.1
Multiply by by adding the exponents.
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Step 5.2.1.1.1
Move .
Step 5.2.1.1.2
Multiply by .
Step 5.2.1.2
Multiply by .
Step 5.2.1.3
Multiply by .
Step 5.2.2
Add and .
Step 5.3
Add and .
Step 5.4
Add and .
Step 5.5
Subtract from .