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find the value of the polynomial …

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find the value of the polynomial 4 + x2 - x + 2x2 at x = -2

  • 2 answers

Dharmendra Kumar 6 years, 8 months ago

So if polynomial p(x)= 4+x2-x+2x3

Then at x=-2

p(-2)=4+(-2)2-(-2)+2(-2)3

        =4+4+2+2×(-8)

        =10-16

        =-6

 

 

 

Dharmendra Kumar 6 years, 8 months ago

Let p(x)=4+x2-x+2x2

                =3x2-x+4

At x=-2

p(-2)= 3×(-2)2-(-2)+4

        =3×4+2+4

        =12+2+4

        =18

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