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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Updated on: 10-Oct-2022

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