SOLUTION: Multiply: {{{(sqrt10 + 5sqrt5)(sqrt10 - 5sqrt5)}}} Type an exact answer, using radicals as needed.

Algebra ->  Square-cubic-other-roots -> SOLUTION: Multiply: {{{(sqrt10 + 5sqrt5)(sqrt10 - 5sqrt5)}}} Type an exact answer, using radicals as needed.      Log On


   

Question 387935: Multiply: %28sqrt10+%2B+5sqrt5%29%28sqrt10+-+5sqrt5%29
Type an exact answer, using radicals as needed.
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
This is (a + b)*(a - b)
= a^2 - b^2
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%28sqrt10+%2B+5sqrt5%29%28sqrt10+-+5sqrt5%29
= 10 - 125
= -115