Question

When x=-1, what is the value of the polynomial 2x³+2x? Write the correct alternative answer for each of the following questions.
(A) 4
(B) 2
(C) -2
(D) -4

Answer 1

Let the given polynomial p(x).

It is given that ,

p(x) = 2x³+2x

Substitute x = -1 in p(x ), we get

p( -1 ) = 2(-1)³ + 2(-1)

= -2 - 2

= -4

Therefore ,

If x = -1 the value of p(x) = -4

Option (D ) is correct.

••••

Answer 2

Step-by-step explanation:

-4

is the correct answer after solving