Pre-Algebra Examples

$(- 8 + 5 x^{2} + 6 x) + (x^{2} - 4 - 6 x)$

Step 1

Remove parentheses.

$- 8 + 5 x^{2} + 6 x + x^{2} - 4 - 6 x$

Step 2

Combine the opposite terms in $- 8 + 5 x^{2} + 6 x + x^{2} - 4 - 6 x$ .

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Step 2.1

Subtract $6 x$ from $6 x$ .

$- 8 + 5 x^{2} + x^{2} - 4 + 0$

Step 2.2

Add $- 8 + 5 x^{2} + x^{2} - 4$ and $0$ .

$- 8 + 5 x^{2} + x^{2} - 4$

Step 3

Subtract $4$ from $- 8$ .

$5 x^{2} + x^{2} - 12$

Step 4

Add $5 x^{2}$ and $x^{2}$ .

$6 x^{2} - 12$