Question

Which expression is equivalent to x^4 • x^−2?
(A)x^−8
(B)x^2
(C)x^6
(D)-8 • x

Answer 1

Answer:

B

Step-by-step explanation:

Using the rule of exponents

$a^{m}$ × $a^{n}$ ⇔ $a^{(m+n)}$

Given

$x^{4}$ × $x^{-2}$ = $x^{(4-2)}$ = x² → B

Answer 2

Answer:

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