SOLUTION: Could someone please show me how to solve this equation. Multiply {{{(x^8+x^7)*(x^8+x^7-x^6)}}}

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Could someone please show me how to solve this equation. Multiply {{{(x^8+x^7)*(x^8+x^7-x^6)}}}      Log On


   

Question 152236: Could someone please show me how to solve this equation.
Multiply
%28x%5E8%2Bx%5E7%29%2A%28x%5E8%2Bx%5E7-x%5E6%29
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
Let's use a modified FOIL (First-Outer-Inner-Last) method to multiply"
Now simplify this - remembering that when you multiply factors with the same base (x in this case) you will add the exponents of the factors.
Now combine like-terms.
x%5E16%2B2x%5E15-x%5E13 ...and this could be simplified to:
x%5E13%28x%5E3%2B2x%5E2-1%29