Simplify (6x^3-4)+(-2x^3+9)

$(6 x^{3} - 4) + (- 2 x^{3} + 9)$

Step 1

Remove parentheses.

$6 x^{3} - 4 - 2 x^{3} + 9$

Step 2

Subtract $2 x^{3}$ from $6 x^{3}$ .

$4 x^{3} - 4 + 9$

Step 3

Add $- 4$ and $9$ .

$4 x^{3} + 5$