Pre-Algebra Examples

$(6 x^{3} + 4 x + x^{2} - 7) + (2 x^{3} - 8 x^{2} + 3)$

Step 1

Remove parentheses.

$6 x^{3} + 4 x + x^{2} - 7 + 2 x^{3} - 8 x^{2} + 3$

Step 2

Add $6 x^{3}$ and $2 x^{3}$ .

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

Step 3

Subtract $8 x^{2}$ from $x^{2}$ .

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

Step 4

Add $- 7$ and $3$ .

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