1)(x-6)^2-x(x+8)=2 2)(2x+3)^2-4(x-1)(x+1)=49
1) (x-6)^2 - x(x+8)=2 x^2 - 12x +36 - x^2 - 8x =2 -20x = - 34 x = 1,7 2) (2x+3)^2-4(x-1)(x+1)=49 4x^2 +12x+9 - 4(x^2 - 1) = 49 4x^2+12x+9 - 4x^2 + 4 = 49 12x = 36 x = 3 Ответ: 1,7 ; 3.