Simplify 3b+5b^2-3b-4b^2

$3 b + 5 b^{2} - 3 b - 4 b^{2}$

Combine the opposite terms in $3 b + 5 b^{2} - 3 b - 4 b^{2}$ .

Subtract $3 b$ from $3 b$ .

$5 b^{2} + 0 - 4 b^{2}$

Add $5 b^{2}$ and $0$ .

$5 b^{2} - 4 b^{2}$

Subtract $4 b^{2}$ from $5 b^{2}$ .

$b^{2}$