Question

5. What is the inverse of f if f(x) = ^3√x-7

8. Multiply and simplify if possible. √5x(√x-5√5)

10. 7^1/3 * 7^2/3

Answer 1

#5 (x+7)^3
#8 √(5x)(√x-5√5) = x√5 - 25√x
(√5)x(√x-5√5) = x√(5x) - 25x
not sure either one is any simpler
#10 add exponents: 7^(1/3 + 2/3) = 7^1 = 7

Answer 2

#5 might also be x^3+7
depending in just what is in the cube root