Question

Find the value of the polynomial 3x2 – x + 8 at x = - 2​

Answer 1

Answer:

Step-by-step explanation:

$3x^{2} -x+8$

$x=-2$

$3x^{2} -x+8$

$=3(-2)^{2} -(-2)+8$

$=3(4)+2+8$

$=12+2+8$

$=14+8$

$=22$