Question

Find the value of Polynomial
${8x}^{3}$
-3x+7 at x=-1 and x=2​

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:

$p(x) \: = 8 {x}^{3} - 3x + 7 \\ p( - 1) = 8 \times { - 1}^{3} - 3 \times ( - 1) + 7 \\ = - 8 + 3 + 7 \\ = 2$

$p(2) = 8 \times {2}^{3} - 3 \times 2 + 7 \\ = 8 \times 8 - 6 + 7 \\ = 65$

Hope this helps you.