Question

Which expression is equivalent to x^4 • x^−2?

(A)x^−8
(B)x^2
(C)x^6
(D)-8 • x

Answer 1

B: x^2

Step-by-step explanation

because when two variables with exponents are multiplied therefore the exponents are added and 4 + (-2) = 2 so X^2

Answer 2

B

Explanation:

Using the rule of exponents

`a^(m)` ×
`a^(n)` ⇔
`a^((m+n))`

Given

`x^(4)` ×
`x^(-2)` =
`x^((4-2))` = x² → B