Question

Simplify the expression and find the value when x = - 3
1. 2(x^2-3x) - (7x-4)​

Answer 1

Step-by-step explanation:

$2( {x}^{2} - 3x) - (7x - 4) \\ 2 {x}^{2} - 6x - 7x + 4 \\ 2 {x}^{2} - 13x + 4 \\ x = - 3 \\ = 2 {( - 3)}^{2} - 13( - 3) + 4 \\ = 2(9) + 39 + 4 \\ = 18 + 39 + 4 \\ = 61$

hope you get your answer