# Precalculus Examples

Find the value at .
Replace the variable with in the expression.
Simplify the result.
Simplify each term.
Anything raised to is .
Divide by .
Add and .
The final answer is .
The value at is .
Find the value at .
Replace the variable with in the expression.
Simplify the result.
Move to the numerator using the negative exponent rule .
Add and .
The final answer is .
The value at is .
Find the value at .
Replace the variable with in the expression.
Simplify the result.
Evaluate the exponent.
To write as a fraction with a common denominator, multiply by .
Write each expression with a common denominator of , by multiplying each by an appropriate factor of .
Combine.
Multiply by .
Combine the numerators over the common denominator.
Simplify the numerator.
Multiply by .
Add and .
The final answer is .
The value at is .
Find the value at .
Replace the variable with in the expression.
Simplify the result.
Raise to the power of .
To write as a fraction with a common denominator, multiply by .
Write each expression with a common denominator of , by multiplying each by an appropriate factor of .
Combine.
Multiply by .
Combine the numerators over the common denominator.
Simplify the numerator.
Multiply by .
Add and .
The final answer is .
The value at is .
List the points to graph.
Use the found points and asymptotes to graph .
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