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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

    • Posted by Guru Ram 8 years, 4 months ago

    CBSE > Class 09 > Mathematics
    • 2 answers

    Dharmendra Kumar 8 years, 4 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

     

     

     

    0Thank You

    Dharmendra Kumar 8 years, 4 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

    0Thank You

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