SOLUTION: Subtract. (3a3 – 2a2) – (7a3 + 9a2) Please I need help!

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Subtract. (3a3 – 2a2) – (7a3 + 9a2) Please I need help!      Log On


   

Question 613599: Subtract. (3a3 – 2a2) – (7a3 + 9a2)
Please I need help!
Answer by radh(108) About Me  (Show Source):
You can put this solution on YOUR website!
Multiply.
3a%5E%283%29-2a%5E%282%29%2B%28-%287a%5E%283%29%29-%289a%5E%282%29%29%29
3a%5E%283%29-2a%5E%282%29%2B%28-7a%5E%283%29-%289a%5E%282%29%29%29
3a%5E%283%29-2a%5E%282%29%2B%28-7a%5E%283%29-9a%5E%282%29%29
Use the Distributive Property.
%283-7%29a%5E%283%29-2a%5E%282%29-9a%5E%282%29
Simplify.
-4a%5E%283%29-2a%5E%282%29-9a%5E%282%29
Use the Distributive Property again.
-4a%5E%283%29%2B%28-2-9%29a%5E%282%29
Subtract.
-4a%5E%283%29-11a%5E%282%29

:)