Question

Simplify -y^3 - 7 + 4 + 4y^3 + 11x^2 + 2x^2

Answer 1

1 Collect like terms

(−y3+4y3)+(−7+4)+(11x2+2x2)

2 Simplify 3y3−3+13x2 to:

3{y}^{3}-3+13{x}^{2}

Answer:  3y^3−3+13x^2