Referring to the figure, simplify the expression.
http://www.ppstest2.com/images2/AL9005.jpg
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OpenStudy (anonymous):
just find the square root of 54
OpenStudy (anonymous):
7.34846922835
OpenStudy (johnweldon1993):
As @Christina42872 has said
OpenStudy (anonymous):
thnx but i dont have a twitter
OpenStudy (anonymous):
thats what i put and it was wrong :(
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OpenStudy (anonymous):
well that is ur problem
OpenStudy (anonymous):
?
OpenStudy (johnweldon1993):
try
\[3\sqrt{6}\]
OpenStudy (anonymous):
it said simplify not evaluate
OpenStudy (anonymous):
when it evaluate then you put 7.34....
when it is simplify you the the 3 sqrt(6)
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OpenStudy (johnweldon1993):
exactly @timo86m
OpenStudy (anonymous):
so its 7.34 oh ok :) yay
OpenStudy (anonymous):
no!
OpenStudy (anonymous):
yes it is see i was right
OpenStudy (johnweldon1993):
no that would be evaluating..you're simplifying
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OpenStudy (anonymous):
3 * sqrt(6)
OpenStudy (anonymous):
that is 7.32
OpenStudy (anonymous):
3 * sqrt(6)
just as is
OpenStudy (anonymous):
so is it 7.32 or 7.34
OpenStudy (johnweldon1993):
just think of it like this
what is
\[\sqrt{54}\]
it can be written as
\[\sqrt{9}\sqrt{6}\]
right? because the squareroot of 9 times the square root of 6 is the square root of 54 right?
so what is the square root of 9? 3
so your answer is 3 * square root 6
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OpenStudy (anonymous):
the answer is 7.32
OpenStudy (johnweldon1993):
let me ask you
if I asked you to simplify x * x ...what would you say that is? x² correct?
now what if I asked you to EVALUATE x * x ? what would you say? you don't know it.
the difference between evaluating and simplifying
OpenStudy (anonymous):
are you asking me or her
OpenStudy (johnweldon1993):
either...I'm trying to point out...that the question asked to simplify...not solve...the answer would be 3 * square root 6