SOLUTION: could you checking and see if my answer is right? Thank you! Multiply. (3Sqrt(6)-9Sqrt(5)) (5Sqrt(6)+15Sqrt(5)) 15(6)^2-45Sqrt(30)+45Sqrt(30)-135*5 90-0-675 =-585

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: could you checking and see if my answer is right? Thank you! Multiply. (3Sqrt(6)-9Sqrt(5)) (5Sqrt(6)+15Sqrt(5)) 15(6)^2-45Sqrt(30)+45Sqrt(30)-135*5 90-0-675 =-585      Log On


   

Question 214789: could you checking and see if my answer is right?
Thank you!
Multiply.
(3Sqrt(6)-9Sqrt(5)) (5Sqrt(6)+15Sqrt(5))
15(6)^2-45Sqrt(30)+45Sqrt(30)-135*5
90-0-675
=-585

Answer by jsmallt9(3758) About Me  (Show Source):
You can put this solution on YOUR website!
1: %283sqrt%286%29-9sqrt%285%29%29+%285sqrt%286%29%2B15sqrt%285%29%29
2: 15%286%29%5E2-4sqrt%2830%29%2B45sqrt%2830%29-135%2A5
3: 90+-+0+-+675
4: -585

There is an error in line 2. In spite of this lines 3 and 4 are still correct!?
Line 2 should be
2: 15%286%29-45sqrt%2830%29%2B45sqrt%2830%29-135%2A5
or
2: 15%28sqrt%286%29%29%5E2-45sqrt%2830%29%2B45sqrt%2830%29-135%2A%28sqrt%285%29%29%5E2