Question

What is the simplest form of this expression y(-6y^3-8)+y^4

Answer 1

First, do the multiplication indicated:

-6y^4 - 8y + y^4

Next, combine the y^4 terms:  -5y^4 - 8y

Answer 2

Use the distributive property to multiply y by -6y^3 and -8. This gives you -6y^4 - 8y + y^4. Add the like terms and you get -5y^4 - 8y.

Therefore, the simplest form of this expression is -5y^4 - 8y.