Question

If x = 3 then find the polynomial 2x - 2x^3+7

Answer 1

Hello friend
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=) In example

p(x) = 2x -2x^3 + 7

x = taking

p(x) = 2x - 2x^3 +7

p(3) = 2*3 - 2(3)^3 +7

= 2*3 - 2*27+7

= 6-54+7

= -48+7

= -41.

Therefore,

p(x)=2x-2x^3+7 = -41.


I hope this will helps you.

Thanks.

Answer 2

since X= 3
polynomial=
$2x - 2 {x}^{3} + 7 \\ 2(3) - 2 \times 27 + 7 \\ 6 - 54 + 7 \\ 13 - 54 \\ - 41$
hence answer is - 41