Pre-Algebra Examples

$(4 x^{3} - x + 9) + (3 x^{2} + x - 1)$

Step 1

Remove parentheses.

$4 x^{3} - x + 9 + 3 x^{2} + x - 1$

Step 2

Combine the opposite terms in $4 x^{3} - x + 9 + 3 x^{2} + x - 1$ .

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Step 2.1

Add $- x$ and $x$ .

$4 x^{3} + 9 + 3 x^{2} + 0 - 1$

Step 2.2

Add $4 x^{3} + 9 + 3 x^{2}$ and $0$ .

$4 x^{3} + 9 + 3 x^{2} - 1$

Step 3

Subtract $1$ from $9$ .

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