Question

For the polynomial

P(x)=2xcube+6xsquare - 2x + 9find p( -1).

Answer 1

Answer:

13

Step-by-step explanation:

P(x) = 2x³+6x²+9

here, x = -1 (given)

P(-1) = 2×-1³+6×-1²+9

= 2×-1+6×1+9

= -2+6+9

= 13

Answer 2

Answer:

p(x)= 2x^3 + 6x^2 - 2x + 9

p(-1)= 2(-1)^3 + 6(-1)^2 - 2(-1) + 9

= 2(-1) + 6(1) + 2 +9

= -2 +6 +2 +9

= 15