Question

1. If p(x) = 3x + 4x² - 5x +8, find p(-2).​

Answer 1

Step-by-step explanation:

$\small{\underline{\tt{\red{Given}}}}$

$\rightarrow$ p(x) = -2

$\small{\underline{\tt{\green{solution}}}}$

$\rightarrow$$p(x) = 3x + {4x }^{2} - 5x + 8$

$\rightarrow$$p( - 2) = 3( - 2) + 4( { - 2}^{2} ) - 5( - 2) + 8$

$\rightarrow$$p( - 2) = - 6 + 16 + 10 + 8$

$\rightarrow$$p( - 2) = 10 + 18$

$\rightarrow$$p( - 2) = 28$

$\small\boxed{p(-2) = 28 }$

Hope it helps