SOLUTION: Can you please help. Perform the operations and simplify. Assume the variables represent positive real numbers. {{{(2*sqrt(x) - sqrt(y))*(sqrt(x) + sqrt(y))}}}

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Can you please help. Perform the operations and simplify. Assume the variables represent positive real numbers. {{{(2*sqrt(x) - sqrt(y))*(sqrt(x) + sqrt(y))}}}      Log On


   

Question 41519: Can you please help.
Perform the operations and simplify. Assume the variables represent positive real numbers.
%282%2Asqrt%28x%29+-+sqrt%28y%29%29%2A%28sqrt%28x%29+%2B+sqrt%28y%29%29
Answer by rapaljer(4671) About Me  (Show Source):
You can put this solution on YOUR website!
%282%2Asqrt%28x%29+-+sqrt%28y%29%29%2A%28sqrt%28x%29+%2B+sqrt%28y%29%29
By FOIL :
%282%2Asqrt%28x%29+-+sqrt%28y%29%29%2A%28sqrt%28x%29+%2B+sqrt%28y%29%29
2%2Ax+-+2sqrt%28x%29%2Asqrt%28y%29+-sqrt%28x%29%2Asqrt%28y%29-y
2%2Ax+-+3sqrt%28x%29%2Asqrt%28y%29+-y or 2x-y+-+3%2Asqrt%28xy%29+

R^2 at SCC