Which expression is equal to - 3b (6b^-8)

Answer:a^2/b

Step-by-step explanation:

(a^6b^-3) 1^/3

a^6 ^ 1/3 b ^ - 3 ^ 1/3

using the power of power rule we can multiply the exponents

a ^ (6*1/3) b ^ (-3 * 1/3)

a^ 2 b ^ - 1

the negative exponent flips it from the numerator to the denominator

a^2 * 1 / b^1

a^2/b