SAT Subject Test Mathematics Level 1

Example 2

There’s nothing tricky about this question if you know how to work with
exponents. The first step is to eliminate the parentheses. Everything inside
gets cubed:

3. (xm)n    =   xmn

4. (xn)(yn) =   (xy)n

5.

For all xyz ≠   0,  

1.

(A)

(B)

(C)

(D)

(E)