Question

Simplify: ( y^−7 × y^−3 )−1 A. y−21 B. y 21 C. y−10 D. y 10

Answer 1

Answer:

D

Step-by-step explanation:

The rules we need to simplify this are:

$a^x*a^y=a^{x+y}$

and

$(a^x)^y=a^{xy}$

Now, let's simplify the problem:

$(y^{-7}*y^{-3})^{-1}\\(y^{-10})^{-1}\\y^{10}$

Answer choice D is y^10, so that's correct.