Question

If P(x) = 2x³+6x²- 2x+9 find P(-1).​

Answer 1

Answer:

15.

Step-by-step explanation:

* 2(-1) + 6(-1)^2 - 2(-1) + 9

* -2 +6 +2 +9

* +15

Answer 2

$2 ({ - 1})^{3} + 6 ({ - 1})^{2} - 2( - 1) + 9$

$(2 \times - 1) + (6 \times 1) + 2 + 9$

$- 2 + 6 + 11 = - 2 + 17 = 15$

Therefore, 15 is the answer ❗