Question

Given that a^­­b = x, evaluate the following: 2a^3b +a^2b+ a^b

Answer 1

2x^3+x^2 +x = x(2x^2 +x+1)

Step-by-step explanation:

a^­­b = x,

2a^3b +a^2b+ a^b=

2(a^b)^3+(a^b)^2 +a^b=

2x^3+x^2 +x=

x(2x^2 +x+1)