SAT II Math I : Simplifying Expressions

Study concepts, example questions & explanations for SAT II Math I

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Example Questions

Example Question #21 : Simplifying Expressions

Simplify the expression

Possible Answers:

Already in simplest form

Correct answer:

Explanation:

Simplify the numerator by multiplying in the  term

Cancel out like terms in the numerator and denominator.

Example Question #22 : Simplifying Expressions

Simplify:  

Possible Answers:

Correct answer:

Explanation:

Rewrite the denominator of the second fraction using a power.

Using the subtraction rule of exponents, we can simplify this as one term.

The expression becomes:

Apply the addition rule of exponents.

The answer is:  

Example Question #23 : Simplifying Expressions

Possible Answers:

Correct answer:

Explanation:

Factor an  in the numerator to get:

We can now cancel out  from the numerator and denominator leaving the answer.

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