(4 х+3)^2-(3x-1)^2=0 16x^2+24x+9-(9x^2-6x+1)=0 16x^2+24x+9-9x^2+6x-1=0 7x^2+30x+8=0 7x2 + 30x + 8 = 0 D = b2 - 4ac D = 900 - 224 = 676 = 26^2 x1,2 = -b ± √D/2a x1 = -30 + 26/14 = - 4/14 = - 2/7 x2 = -30 - 26/14= - 56/14 = -4 Ответ: x1 = - 2/7 ; x2 = -4