Question

Find the value of 2x to the power of 3 - 4x if x=3

Answer 1

42

Explanation:

2x^3 - 4x

If x = 3 , plug the value into the expression

2(3)^3 - 4 x 3

2(3 x 3 x 3 ) - 12

2(27) - 12

54 - 12 = 42