Question

If x = 3 what is the value of x3 – 2x

Answer 1

If x=3 than
x^3 = 3^3
3^3=27
2x3=6
So that is
27-6=

21

Answer 2

Explanation:

When

x = 3

x³ - 2x = (3)³ - 2 * 3

= 27 - 6

= 21

Hope it will help :)