Pre-Algebra Examples

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

Step 1

Remove parentheses.

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

Step 2

Add $4 x^{3}$ and $2 x^{3}$ .

$6 x^{3} + 2 x + 2 x^{2} - 8 + x^{2} + 9$

Step 3

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

$6 x^{3} + 2 x + 3 x^{2} - 8 + 9$

Step 4

Add $- 8$ and $9$ .

$6 x^{3} + 2 x + 3 x^{2} + 1$