SOLUTION: I am really stuck on these two problems. Can someone please explain to me how to do them? I changed the numbers so that I will not get the answer but see how to do them. Thanks!

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: I am really stuck on these two problems. Can someone please explain to me how to do them? I changed the numbers so that I will not get the answer but see how to do them. Thanks!       Log On


   

Question 237897: I am really stuck on these two problems. Can someone please explain to me how to do them? I changed the numbers so that I will not get the answer but see how to do them. Thanks!
Multiply:
(2+sqrt+2 -6sqrt+7)(3+sqrt+2 + 9 +sqrt+7)
Another one I need help with is
11z-77 / z-7
------ ----
49 77z
Answer by vleith(2983) About Me  (Show Source):
You can put this solution on YOUR website!
why change the numbers. Just post your real questions
%282%2Asqrt%282%29+-+6%2Asqrt%287%29%29%2A%283sqrt%282%29+%2B+9sqrt%287%29%29 just multiply like your would with integers

6%2A2+%2B+18sqrt%282%29sqrt%287%29+-+18sqrt%287%29sqrt%282%29+-+54%2A7
12+%2B+18sqrt%2814%29+-+18sqrt%2814%29+-+378
12+-+378
-366
+%2849+%2F%2811z-77%29%29+%2F+%2877z%2F%28z-7%29%29
+%2849+%2F%2811z-77%29%29+%2A+%28%28z-7%29%2F77z%29
+%2849+%2F%2811%2A%28z-7%29%29%29+%2A+%28%28z-7%29%2F77z%29
%2849%2F11%29%2A%281%2F77z%29
%287%2F11%29%2A%281%2F11z%29
7%2F121z