Question

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

Answer 1

Step-by-step explanation:

p(x)=2x³+2x

x=1......(given)

so, p(1)=2(1)³+2(1)=2+2=4

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Answer 2

$\underline{\boxed{\bold{Question}}}$

• Find the value of polynomial 2x³ + 2x when x = -1​

$\underline{\boxed{\bold{Answer}}}$

Given equation $\rightarrow$ f(x) = 2x³ + 2x

So to find value of f(x) when x = -1,

We just replace x $\rightarrow$ -1

So now,

f(x) =  2x³ + 2x

     =  2(-1)³ + 2(-1)

     = -2 -2

     = -4

So f(x) = -4

∴ Value of polynomial f(x) = 2x³ + 2x when x = -1 is (-4).