SOLUTION: Can someone help me multiply each radical and simplify please? (2√7+6√2)(√7+4√2) and (12-4√5)(12+4√5) thank you for your h

Algebra ->  Radicals -> SOLUTION: Can someone help me multiply each radical and simplify please? (2√7+6√2)(√7+4√2) and (12-4√5)(12+4√5) thank you for your h      Log On


   

Question 1040452: Can someone help me multiply each radical and simplify please?
(2√7+6√2)(√7+4√2)
and
(12-4√5)(12+4√5)
thank you for your help
Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
Multiplying two binomials; Distributive Property, or use lattice multiplication arrangement.


Your first example is 14sqrt%2814%29%2B62.

Answer by ikleyn(52776) About Me  (Show Source):
You can put this solution on YOUR website!
.
Can you multiply and simplify this:

(a+b)*(c+d) ?

If you can, then do the same with (2√7+6√2)(√7+4√2).

You have a = 2√7, b = 6√2, c = √7 and d = 4√2.