Simplify -9(-10n-4-7n^2)-7n

$- 9 (- 10 n - 4 - 7 n^{2}) - 7 n$

Step 1

Simplify each term.

Apply the distributive property.

$- 9 (- 10 n) - 9 \cdot - 4 - 9 (- 7 n^{2}) - 7 n$

Simplify.

Multiply $- 10$ by $- 9$ .

$90 n - 9 \cdot - 4 - 9 (- 7 n^{2}) - 7 n$

Multiply $- 9$ by $- 4$ .

$90 n + 36 - 9 (- 7 n^{2}) - 7 n$

Multiply $- 7$ by $- 9$ .

$90 n + 36 + 63 n^{2} - 7 n$

Step 2

Simplify by adding terms.

Subtract $7 n$ from $90 n$ .

$83 n + 36 + 63 n^{2}$

Simplify the expression.

Move $36$ .

$83 n + 63 n^{2} + 36$

Reorder $83 n$ and $63 n^{2}$ .

$63 n^{2} + 83 n + 36$