Pre-Algebra Examples

$(- n^{2} + 3 + 2 n) + (n^{2} + 5 n)$

Step 1

Remove parentheses.

$- n^{2} + 3 + 2 n + n^{2} + 5 n$

Step 2

Combine the opposite terms in $- n^{2} + 3 + 2 n + n^{2} + 5 n$ .

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Step 2.1

Add $- n^{2}$ and $n^{2}$ .

$3 + 2 n + 0 + 5 n$

Step 2.2

Add $3 + 2 n$ and $0$ .

$3 + 2 n + 5 n$

Step 3

Add $2 n$ and $5 n$ .

$3 + 7 n$