Question

find the value of polynomials 3x*4+2x*3-x*2+7x-5at x=-2​

Answer 1

Answer:

here,

p(x) = 3x⁴ + 2x³ -x² +7x -5

so,

p(-2) = 3*(-2)⁴ + 2*(-2)³ -(-2)² +7*(-2) -5

= 3*16 +2*(-8) -4 -14 -5

= 48 - 16 -23

= 48 - 39

= 9.

so, ar x = -2 the value of the polynomial is 9

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