Question

x=-1 Find the value of the polynomial 2x-2x³+7 using given values for x​

Answer 1

Step-by-step explanation:

hope it helps please make my answer as brainlist

Answer 2

${\boxed{ \Large{ \red{ \rm{{x \: = \: - 1}}}}}}$

So , putting the value of x in the given polynomial.

$\begin{cases}\rm \large {{ \large{ \blue{ \rm \: \: {{↬}}}}}} \: \:2( - 1) \: - \: 2 { (- 1)}^{3} \: + \: 7 \\ \\ \rm \large {{ \large{ \blue{ \rm \: \: {{↬}}}}}} \: \: - 2 \: + \: 2 \: + \: 7 \\ \\ \rm \large {{ \large{ \blue{ \rm \: \: {{↬}}}}}} \: \:\rm \large \:0 \: + \: 7 \\ \\ \rm \large {{ \large{ \blue{ \rm \: \: {{↬}}}}}} \: \:7 \end{cases}$