Question

2x-3=
$2x - 3 = 2 {x}^{2} - 2x + 21$
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Answer 1

$2x - 3 = 2x {}^{2} - 2x + 21 \\ = > 2x {}^{2} - 2x + 21 - 2x + 3 \\ = > 2x {}^{2} - 4x + 24 \\ = >$

I hope that helps