SOLUTION: simplify this polynomial. Maybe try grouping? (18-2x^3+9x)-(4-x^2-3x^3+11x) If anyone can help i would greatly appreciate it.

Algebra ->  Exponential-and-logarithmic-functions -> SOLUTION: simplify this polynomial. Maybe try grouping? (18-2x^3+9x)-(4-x^2-3x^3+11x) If anyone can help i would greatly appreciate it.      Log On


   

Question 1174997: simplify this polynomial. Maybe try grouping?
(18-2x^3+9x)-(4-x^2-3x^3+11x)
If anyone can help i would greatly appreciate it.
Found 2 solutions by Edwin McCravy, MathLover1:
Answer by Edwin McCravy(20060) About Me  (Show Source):
You can put this solution on YOUR website!
%2818-2x%5E3%2B9x%29-%284-x%5E2-3x%5E3%2B11x%29

18-2x%5E3%2B9x-4%2Bx%5E2%2B3x%5E3-11x%29

x%5E3+%2B+x%5E2+-+2x+%2B+14

That's all you can do with it.  It doesn't factor. Did you copy it correctly?

Edwin

Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

recall the rule:
When parentheses are preceded by a plus sign + simply remove them. Nothing changes.
When parentheses are preceded by a minus sign − change the sign of every term within the parentheses. Change + to − and − to + .

%2818-2x%5E3%2B9x%29-%284-x%5E2-3x%5E3%2B11x%29
18-2x%5E3%2B9x-4%2Bx%5E2%2B3x%5E3-11x
x%5E3%2Bx%5E2-2x%2B14