How to subtract exponential variables

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ISEE Upper Level Quantitative Reasoning › How to subtract exponential variables

Questions 1 - 9
1

Simplify the following expression:

Explanation

Simplify the following expression:

We can treat this basically as a regular subtraction problem.

We want to subtract our coefficients, while leaving the exponents the same.

2

Assume that . Which of the following expressions is equivalent to:

?

Explanation

3

If , simplify:

Explanation

4

Simplify:

Explanation

5

If , simplify:

Explanation

6

If , simplify:

Explanation

7

If , simplify:

Explanation

8

If , simplify:

Explanation

9

Simplify the expression:

The expression cannot be simplified further.

Explanation

Group, then collect like terms:

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