Răspunsuri

2014-09-20T19:42:02+03:00
X(x+1)(x+2)(x+3)=24=> x(x+3)*(x+1)(x+2)=24=>
 (x^{2} +3x)*(( x^{2} +3x)+2)= 24 => 
(x^{2} +3x)^{2} +2*( x^{2} +3x)=24 
Notam t= x^{2} +3x=> t^{2} +2t=24 => t^{2} +2t-24=0
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