Solving Systems of Equations in Three Variables — Unit test Answers

What is the additive inverse of the polynomial?–6x3 + 4x2 – 4x

Factor –8x3 – 2x2 – 12x – 3 by grouping. What is the resulting expression?

What is the sum of the polynomials?(m + n + 3) + (m + n + 4)

What is the difference of the polynomials?

Which number in the monomial 215x18y3z21 needs to be changed to make it a perfect cube?