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RedPrinceBest ResponseYou've already chosen the best response.1
\[\sqrt(x^2+4)=4x\] taking square on both sides \[x^24=16x^2\] \[16x^2x^2=4\] \[15x^2=4\] \[x^2=4/15\] \[x=\pm2/\sqrt(15)\]
 one year ago

pfenn1Best ResponseYou've already chosen the best response.0
@RedPrince, how did you go from\[x ^{2}+4=16x ^{2}\]to\[x ^{2}4=16x ^{2}\]?
 one year ago

RedPrinceBest ResponseYou've already chosen the best response.1
@pfenn1 by mistake correct it it is now 17 instead of 15 thanks for this
 one year ago
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