SOLUTION: multiply and simplify (5 - 2 square root 2)(7 + 7 square root 2)

Algebra ->  Square-cubic-other-roots -> SOLUTION: multiply and simplify (5 - 2 square root 2)(7 + 7 square root 2)      Log On


   

Question 243431: multiply and simplify
(5 - 2 square root 2)(7 + 7 square root 2)
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
(5 - 2 square root 2)
(7 + 7 square root 2) multiply
------------------------
35-14sqrt2+35sqrt2-14*2 combine the sqrt terms.
35+21sqrt2-28 combine the integers.
7+21sqrt2 extract the common factor 7.
7(1+3sqrt2) ans.