SOLUTION: simplify 9x^3+x-2(8x^3-7x) evaluate -9 divided by 3x-x^2+7 for x = -5 -21/50 divided by 4/9 perform the indicated operation and simplify

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: simplify 9x^3+x-2(8x^3-7x) evaluate -9 divided by 3x-x^2+7 for x = -5 -21/50 divided by 4/9 perform the indicated operation and simplify      Log On


   



Question 549937: simplify 9x^3+x-2(8x^3-7x)
evaluate -9 divided by 3x-x^2+7 for x = -5
-21/50 divided by 4/9 perform the indicated operation and simplify

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
I'll do the first one to get you started

9x^3+x-2(8x^3-7x)


9x^3+x-2(8x^3)-2(-7x)


9x^3+x-16x^3+14x


-7x^3+15x


So 9x^3+x-2(8x^3-7x) = -7x^3+15x