SOLUTION: I am having trouble with these simple radicals... I just keep getting stuck. Please help me solve these problems: {{{ sqrt( 121/100 ) }}} {{{ 4sqrt(45)-3sqrt(20) }}}

Algebra ->  Radicals -> SOLUTION: I am having trouble with these simple radicals... I just keep getting stuck. Please help me solve these problems: {{{ sqrt( 121/100 ) }}} {{{ 4sqrt(45)-3sqrt(20) }}}       Log On


   



Question 119028: I am having trouble with these simple radicals... I just keep getting stuck. Please help me solve these problems:
+sqrt%28+121%2F100+%29+
+4sqrt%2845%29-3sqrt%2820%29+

Found 2 solutions by stanbon, ptaylor:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
sqrt( 121/100)
------------
Rule: sqrt(A/B) = [sqrt(A)]/[sqrt(B)]
Your Problem:
sqrt(121/100) = [sqrt(121)]/[sqrt(100)] = 11/10
=================
Cheers,
Stan H.

Answer by ptaylor(2198) About Me  (Show Source):
You can put this solution on YOUR website!
I am having trouble with these simple radicals... I just keep getting stuck. Please help me solve these problems:

sqrt%28121%29%2Fsqrt%28100%29
sqrt%28121%29=11
sqrt%28100%29=10
So sqrt%28121%29%2Fsqrt%28100%29=11%2F10
4sqrt%2845%29-3sqrt%2820%29=4sqrt%289%2A5%29-3sqrt%284%2A5%29=
12sqrt%285%29-6sqrt%285%29=6sqrt%285%29

Hope this helps---ptaylor