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Simplify the following.
$ (2 x ^2 + x -1) - (3 - 2 x - x^2)$
Given: $ (2 x ^2 + x -1) - (3 - 2 x - x^2)$
To Do: Simplify the expression.
Solution:
Multiply - inside the brackets
$2 x^2 + x -1 - 3 + 2 x + x^2$
Rewrite,
$2 x^2 + x^2 + x + 2 x - 1 - 3$
$3 x^2 + 3 x - 4$
$ (2 x^2 + x -1) - (3 - 2 x - x^2)$ = $3 x^2 + 3 x - 4$
Therefore, simplified expression $3 x^2 + 3 x - 4$
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