Question

x la a 2 + 3x supra 3=x la a 2 + 4x supra 4

Answer 1

$\frac{ x^{2} +3x}{3} = \frac{ x^{2} +4x}{4} =>4( x^{2} +3x)=3( x^{2} +4x)=> \\ =>4 x^{2} +12x= 3x^{2} +12x=> 4 x^{2} -3 x^{2} =12x-12x =>\\=> x^{2} =0=>x=0$