SOLUTION: Hi, this is on my take home final yet the course did not cover this in the homework. Can someone help me out please! Multiply. Assume that all variables represent positive real

Algebra ->  Expressions-with-variables -> SOLUTION: Hi, this is on my take home final yet the course did not cover this in the homework. Can someone help me out please! Multiply. Assume that all variables represent positive real       Log On


   

Question 387327: Hi, this is on my take home final yet the course did not cover this in the homework. Can someone help me out please!
Multiply. Assume that all variables represent positive real number.
sqrt%2811y%29%28sqrt%28y%29-6sqrt%2811%29%29
(Type an exact answer, using radicals as needed. Simplify your answer.)
Their shouldn't be that multiplication dot between the brackets.
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
sqrt%2811y%29%28sqrt%28y%29-6sqrt%2811%29%29
Multiply inside the brackets
sqrt%2811y%29sqrt%28y%29-sqrt%2811y%296sqrt%2811%29
Which is
sqrt%2811y%5E2%29-6sqrt%28121y%29
extract the perfect squares
y%2Asqrt%2811%29-6%2A11%2Asqrt%28y%29
:
y%2Asqrt%2811%29-66%2Asqrt%28y%29