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RetractBest ResponseYou've already chosen the best response.0
The square root and 2th power exclude each other as they are both doing the opposite. You therefore get: \[4x^2  3 = 64\]
 one year ago

shaun786Best ResponseYou've already chosen the best response.0
4x^2 = 67 x^2 = 67/4 x = 67/4 , 67/4
 one year ago

need_help!Best ResponseYou've already chosen the best response.0
But 64 does not become 8?
 one year ago

KreshnikBest ResponseYou've already chosen the best response.0
shaun has it right untill he gets rid of power it should be: \[\LARGE x^2=\frac{67}{4}\] then... \[\LARGE x=\pm \sqrt{\frac{67}{4}}\] but first of all... just want to ask you. is this the given: \[\LARGE \sqrt{(4x^23)^2}=64 \]
 one year ago

shaun786Best ResponseYou've already chosen the best response.0
oh yeah forgot abt the squarerott. Thanks kreshnik
 one year ago

need_help!Best ResponseYou've already chosen the best response.0
Yes! That's the given.
 one year ago

need_help!Best ResponseYou've already chosen the best response.0
Actually I don't know whether the square root is for everything or only for (4x^23)^2
 one year ago

need_help!Best ResponseYou've already chosen the best response.0
But it does matter, right?
 one year ago

need_help!Best ResponseYou've already chosen the best response.0
I mean if it was for everything then 64 will become 8?
 one year ago

lalalyBest ResponseYou've already chosen the best response.0
What do u mean for everything?
 one year ago

need_help!Best ResponseYou've already chosen the best response.0
for the whole equation
 one year ago

lalalyBest ResponseYou've already chosen the best response.0
the whole sqrt is squared? \[(\sqrt{4x^23})^2=64\]
 one year ago

need_help!Best ResponseYou've already chosen the best response.0
Okay, sorry. I'm a bit confused. I just realised the question does not even have a square root, lol. Sorry!
 one year ago

lalalyBest ResponseYou've already chosen the best response.0
haha so what is the question?
 one year ago

need_help!Best ResponseYou've already chosen the best response.0
I have just edited the question.
 one year ago

eliassaabBest ResponseYou've already chosen the best response.2
\[ (4x^23)^2=64 \\ (4x^23)=8 \\ 4 x^2 = 11\\ x^2 = \frac {11}4\\ x=\pm \sqrt{\frac {11}4}\\ x =\pm \frac {\sqrt {11}} 2 \]
 one year ago

need_help!Best ResponseYou've already chosen the best response.0
Thank you so much =)
 one year ago
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