Algebra Examples

$(8 x^{2} - 9 y^{2} - 4 x) + (x^{2} - 3 y^{2} - 7 x)$

Step 1

Remove parentheses.

$8 x^{2} - 9 y^{2} - 4 x + x^{2} - 3 y^{2} - 7 x$

Step 2

Add $8 x^{2}$ and $x^{2}$ .

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

Step 3

Subtract $3 y^{2}$ from $- 9 y^{2}$ .

$9 x^{2} - 12 y^{2} - 4 x - 7 x$

Step 4

Subtract $7 x$ from $- 4 x$ .

$9 x^{2} - 12 y^{2} - 11 x$