Algebra Examples

$(- 7 x^{2} + 7 x^{3}) + (- 9 x^{3} + 9 + 3 x^{2})$

Step 1

Remove parentheses.

$- 7 x^{2} + 7 x^{3} - 9 x^{3} + 9 + 3 x^{2}$

Step 2

Add $- 7 x^{2}$ and $3 x^{2}$ .

$7 x^{3} - 9 x^{3} + 9 - 4 x^{2}$

Step 3

Subtract $9 x^{3}$ from $7 x^{3}$ .

$- 2 x^{3} + 9 - 4 x^{2}$

Step 4

Move $9$ .

$- 2 x^{3} - 4 x^{2} + 9$