Question

Find value of the polynomial 2+x+2x^2 -x^3 at x=2​

Answer 1

Answer:

2+x+2x^2-x^3

=2+2+2.2^2-2^3

=4+2.4-8=4+8-8=4

Answer 2

$\huge \mathbf \pink{Answer}$

$\bf \: 2+x+2x^2 -x^3 \: \qquad \qquad \: at \: x=2$

$\bf \underline{2 + 2} + \underline{2 × 2 × 2} - \underline{2 × 2 × 2}$

$\bf \: 4 \: \cancel{ + 8\: - 8}\:$

$\bf \: \: 4 - 0\:$

$\bf \: = \: 4 \:$