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lgbasalloteBest ResponseYou've already chosen the best response.0
do you have an answer?
 one year ago

gfields444Best ResponseYou've already chosen the best response.0
no, i'm still very confused on how to even start
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
\[\LARGE \sqrt{63x^5} \implies \sqrt{9 \times 7 \times x^4 \times x}\] does that help?
 one year ago

gfields444Best ResponseYou've already chosen the best response.0
a little, the exponents are the things that trip me up the most though.
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
\[\LARGE \sqrt{9 \times 7 \times x^4 \times x} \implies \sqrt 9 \times \sqrt{x^4} \times \sqrt 7 \times \sqrt x\]
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
\[\LARGE \sqrt{x^a} \implies x^{a/2}\]
 one year ago

gfields444Best ResponseYou've already chosen the best response.0
the one before that was too big for the screen lol but let me see if i can keep working this out :)
 one year ago

gfields444Best ResponseYou've already chosen the best response.0
I got dw:1343225546659:dw
 one year ago

phiBest ResponseYou've already chosen the best response.1
you can also pull x^4 out of the square root to get \[ 24 x^2 \sqrt{7x} \]
 one year ago

gfields444Best ResponseYou've already chosen the best response.0
how would it be x^2 outside of the radical and inside it only be x? I need a bit of clarification, I'm not very good at math :/
 one year ago

phiBest ResponseYou've already chosen the best response.1
by definition: sqrt(2*2) = sqrt(2)*sqrt(2) = 2 or, in general sqrt(x)*sqrt(x)= x
 one year ago

phiBest ResponseYou've already chosen the best response.1
x^5 is short hand for x*x*x*x*x (people don't like typing it out, so they use the short hand) sqrt(x*x*x*x*x) = sqrt(x)*sqrt(x)*sqrt(x)*sqrt(x)*sqrt(x) each pair simplfies to x: x*x*sqrt(x) or, using the short hand x^2 * sqrt(x)
 one year ago

phiBest ResponseYou've already chosen the best response.1
Of course, if you do this problem a bunch of times, you start saying things like: if the exponent is even (example: x^4) I can "pull out" x^4 , and divide the power by 2. in other words sqrt(x^4) = x^2
 one year ago

gfields444Best ResponseYou've already chosen the best response.0
okay! so all we did when we pulled out 4 from x^5 is divide it by two?
 one year ago

phiBest ResponseYou've already chosen the best response.1
the exponent 4 is divided by 2 when you pull x^4 out of a square root. if you have x^5 you write it as x^4 times x. then pull out the x^4 and leave the x inside
 one year ago

gfields444Best ResponseYou've already chosen the best response.0
I got it now! :D thank you!
 one year ago
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