Question

Evaluate 3x2 + 3x - 9, when x = 2

Answer 1

9

Explanation:

3x^2 + 3x - 9

Substitute x = 2 into the equation.

3(2)^2 + 3(2) - 9

3(4) + 6 - 9

12 + 6 - 9

18 - 9 =

9

Answer 2

3!
3x2 =6 +3(2)-9
= 3