Simplify (9f^2+9f+9)+(2f-f^2+1)

$(9 f^{2} + 9 f + 9) + (2 f - f^{2} + 1)$

Step 1

Remove parentheses.

$9 f^{2} + 9 f + 9 + 2 f - f^{2} + 1$

Step 2

Subtract $f^{2}$ from $9 f^{2}$ .

$8 f^{2} + 9 f + 9 + 2 f + 1$

Step 3

Add $9 f$ and $2 f$ .

$8 f^{2} + 11 f + 9 + 1$

Step 4

Add $9$ and $1$ .

$8 f^{2} + 11 f + 10$