Question

find the value of polynomial 2x cube + 2x when x=-1​

Answer 1

Answer:

4

Step-by-step explanation:

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

$(2 \times ( {1}^{3} )) + 2$

$(2 \times 1) + 2$

$2 + 2$

$4$

Answer 2

$\huge \sf \red{ᴀnswer}$

2x^3 + 2x = (?)

If x = (-1)

= 2x^3 + 2x

= 2 (-1)^3 + 2(-1)

= 2 (-1) + (-2)

= -2 - 2

= (-4)

hope it helps you✌