Question

Which expression is equal to -3b^4(6b^-8)? Assume b=/0

Answer 1

Explanation:

Answer 2

-18 b^-4= -18/b^4

Explanation:

-3b^4(6b^-8)

Combine coefficients

-3*6 = -18

Combine exponents since the bases are the same, x^y * x^z = x^(x+z)

b^4 *b^ -8

b^(4+-8)

b^ -4

Put back together

-18 b^-4

We also know that x^-y = 1/x^y

-18/b^4