Question

When x= -1 , what is the value of the polynomial2x^3+2x?​

Answer 1

2x^3+2x where x = -1

2(-1)^3+2(-1) = -2^3-2 = -8-2 = -10

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Answer 2

Answer:

-10

Step-by-step explanation:

x=1

(2x)³+2x = [2(-1)]³+2(-1)

[2(-1)]³+2x=(-2)³+(-2)

(-2)³+(-2)=(-8)+(-2)

(-8)+(-2)=(-8)-2

(-8)-2= -(8+2)

-(8+2) = -10

Hope this helps