Simplify (3x^3+7x^2)+(x^2-2x^3)

$(3 x^{3} + 7 x^{2}) + (x^{2} - 2 x^{3})$

Step 1

Remove parentheses.

$3 x^{3} + 7 x^{2} + x^{2} - 2 x^{3}$

Step 2

Subtract $2 x^{3}$ from $3 x^{3}$ .

$x^{3} + 7 x^{2} + x^{2}$

Step 3

Add $7 x^{2}$ and $x^{2}$ .

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