Question

When x=-1,what is the value of 2xcube +2x

Answer 1

2(-1)3+2(-1)
-2-2
=-4 is the answer

Answer 2

Solution :

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Given :

x = -1,.

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To Find :

The value of 2x³ + 2x

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2x³ + 2x

⇒ 2(-1)³ + 2(-1)

⇒ 2(-1)(-1)(-1) + 2(-1)

⇒ 2(-1) + 2(-1)

⇒ - 2 - 2

⇒ - (2 + 2)

⇒ - (4)

⇒ - 4

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