Pre-Algebra Examples

$(15 a^{4} + 6 a^{2} + a) + (6 a^{4} - 2 a^{2} + a)$

Step 1

Remove parentheses.

$15 a^{4} + 6 a^{2} + a + 6 a^{4} - 2 a^{2} + a$

Step 2

Add $15 a^{4}$ and $6 a^{4}$ .

$21 a^{4} + 6 a^{2} + a - 2 a^{2} + a$

Step 3

Subtract $2 a^{2}$ from $6 a^{2}$ .

$21 a^{4} + 4 a^{2} + a + a$

Step 4

Add $a$ and $a$ .

$21 a^{4} + 4 a^{2} + 2 a$