Конкурсные задания для решения квадратных уравнений в 2016 Вариант № 1 (-5X+3)(-X+6)=0 X2 -- 4X + 35 = - 9X2 + 11X + 45 (X+3)2 =(Х+8)2 ( 5X+3)2 =(3X + 5)2 (Х+3)4 +2(Х+3)2 – 8= 0 X4 = (X - 20)2 (X2 – 5 X + 4 )( X2 – 5X + 6) = 120 ( 3X - 8)2 = 3X2 +8X ( 3X - 6)2(X - 6) = (3 X - 6)( X -6)2 X2 - 3Х+ √ 3-X = √ 3-X + 10 Bариант № 2 (-2X + 1)(-2X -7)=0 X2 - 5X – 6 = -7X2 +7X - 10 (X + 10)2 = (X - 9)2 (X - 2)4 - (X - 2)2 – 12 = 0 (4X + 5)2 = 4(X + 5)2 X4 =(3X - 10)2 (2X2 + X - 1)(2X2 + X - 4) + 2 =0 (4X + 5)2= 5X2+ 4X (2X -5)2(X - 5) = (2X-5)( X- 5)2 10) X2-2X+√ 5 –X = √ 5 –X +24