SOLUTION: Please help I get very confused on these type of math problems. Any help is greatly appreciated.
(4√5-8√2)(5√5+10√2)=
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Question 607002: Please help I get very confused on these type of math problems. Any help is greatly appreciated.
(4√5-8√2)(5√5+10√2)=
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
(4√5-8√2)(5√5+10√2)=
:
()*()
FOIL
First: = 20(5) = 100, we have sqrt(5)*sqrt(5) so it's just 5
:
Outer: =
:
Inner: =
:
Last: = -80(2) = -160
:
so we have
100 + - - 160
The middle two terms cancel out, leaving
100 - 160 = -60
:
Did this un-confuse you somewhat?
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