SOLUTION: simplify by combining like terms sqrt 63 - 2 sqrt 28 + 5 sqrt 7

Algebra ->  Algebra  -> Square-cubic-other-roots -> SOLUTION: simplify by combining like terms sqrt 63 - 2 sqrt 28 + 5 sqrt 7      Log On

Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations!
Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help!

   

Question 47524: simplify by combining like terms
sqrt 63 - 2 sqrt 28 + 5 sqrt 7
Answer by venugopalramana(3286) About Me  (Show Source):
You can put this solution on YOUR website!
simplify by combining like terms
sqrt 63 - 2 sqrt 28 + 5 sqrt 7=sqrt(9*7)-2sqrt(4*7)+5sqrt(7)
=sqrt(9)sqrt(7)-2sqrt(4)sqrt(7)+5sqrt(7)=3sqrt(7)-2*2sqrt(7)+5sqrt(7)
=sqrt(7){3-4+5}=4sqrt(7)