Question

What is the value of 9x^2 + 13x – 15, if x = 2

Answer 1

9(2)×2+13(2)-15

18×2+26-15

36+11

47 is your answer ☺️☺️☺️

Answer 2

Explanation:

Given,

`9 {x}^(2) + 13x - 15`

and

`x = 2`

Substitute x = 2 into expression.

`9 {x}^(2) + 13x - 15 = 9( {2}^(2) ) + 13(2) - 15 \\ = 9(4) + 26 - 15 \\ = 36 + 26 - 15 \\ = 62 - 15 \\ = 47`