1) 3x^2-0,(3)=0
2) 4x supra 27=3 supra x
3) 4 supra 6x =54x supra 25
4) 16x^2 +15=14
5) 3(x-1)^2+5=17
6)0,3X^2+ 0,19=23 supra 50
7) 1supra4 x^2+0.4=radical din 0.25
Urgenttttttttttt va rog dau coroanaaaaa
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