SOLUTION: I am needing some help on this for my kids homework. I am sure it is easy for some, but I was never good in math anyway. Thank you. multiply and show all work: -5x+4 by 4x^2+x

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: I am needing some help on this for my kids homework. I am sure it is easy for some, but I was never good in math anyway. Thank you. multiply and show all work: -5x+4 by 4x^2+x      Log On


   



Question 408990: I am needing some help on this for my kids homework. I am sure it is easy for some, but I was never good in math anyway. Thank you.
multiply and show all work:
-5x+4 by 4x^2+x

Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
(-5x+4)(4x^2+x)
-20x^3-5x^2+16x^2+4x
-20x^3+11x^2+4x