Question

Find the value of
$p(x) = {3 \times }^{2} + x + 7 \: when \: x = - 2$
​

Answer 1

Answer:

Given, x = ( - 2 )

so

$p(x) = {3x}^{2} + x + 7 \\ \\ = > p(x) = 3 (- 2) ^{2} + ( - 2) + 7 \\ \\ = > p(x) = 3 \times 4 - 2 + 7 \\ \\ = > p(x) = 12 - 2 + 7 \\ \\ = > p(x) = 10 + 7 \\ \\ = > p(x) = 17$

hope it helps uH ✔

Answer 2

$3 {x}^{2} + x + 7$

$3 {( - 2)}^{2} + ( - 2) + 7$

$3(4) - 2 + 7$

$12 + 5$

$= 17$