Question

Find the values of the polynomial 2x - 2x + 7 using x = -1
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Answer 1

$\huge\boxed{2x-2x+7}$

$\boxed{\red{\bf{Given: x = -1}}}$

$\small\mathcal\red{=2(-1)\:-2(-1)\:+7}$

$\small\mathcal\red{=-2+2+7}$

$\small\mathcal\red{=7}$