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mathsloverBest ResponseYou've already chosen the best response.2
\[\large{x^24x12=0}\] right?
 one year ago

ProgramGuruBest ResponseYou've already chosen the best response.1
you just add 4 to both sides. that will make it \[(x2)^{2}=16\]
 one year ago

mathsloverBest ResponseYou've already chosen the best response.2
ok so now .. \[\large{x^24x12=x^24x+416=0}\] right?
 one year ago

mathsloverBest ResponseYou've already chosen the best response.2
now can u write \[\large{x^24x+4=(x2)^2}\] ??
 one year ago

mathsloverBest ResponseYou've already chosen the best response.2
(x)^2 2(2)(x)+2^2 = a^22ab+b^2=(ab)^2=(x2)^2
 one year ago

mathsloverBest ResponseYou've already chosen the best response.2
ok so : (x^24x+4) = (x2)^2 ?
 one year ago

gfields444Best ResponseYou've already chosen the best response.0
x^24x12=0 x=2 x=6? or am I doing it wrong
 one year ago

mathsloverBest ResponseYou've already chosen the best response.2
I think you are doing it wrong ; : x^24x12 = 0 \[\large{x^24x+416=0}\] \[\large{(x2)^216=0}\] \[\large{(x24)(x2+4)=0}\] \[\large{(x6)(x+2)=0}\] hence either x = 6 or x = 2
 one year ago

mathsloverBest ResponseYou've already chosen the best response.2
always remember that : \[\large{(ab)^2=a^22ab+b^2}\] \[\large{(a+b)^2=a^2+2ab+b^2}\]
 one year ago

mathsloverBest ResponseYou've already chosen the best response.2
or : \[\large{(a\pm b)^2=a^2\pm 2ab +b^2}\]
 one year ago

gfields444Best ResponseYou've already chosen the best response.0
You're awesome! Thank you so much! The formulas were very helpful :)
 one year ago

mathsloverBest ResponseYou've already chosen the best response.2
nice to hear .. :) best of luck
 one year ago
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