Algebra Examples

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

Step 1

Remove parentheses.

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

Step 2

Combine the opposite terms in $3 x^{3} + 4 x^{2} + 3 x^{3} - 4 x^{2} - 9 x$ .

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Step 2.1

Subtract $4 x^{2}$ from $4 x^{2}$ .

$3 x^{3} + 3 x^{3} + 0 - 9 x$

Step 2.2

Add $3 x^{3} + 3 x^{3}$ and $0$ .

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

Step 3

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

$6 x^{3} - 9 x$