Question

найдите корень уравнения (x-4)(x-6)-(x-2)(x+2)=-2

Answer 1

(x-4)(x-6) -(x-2)(x+2) = -2

x² -4x -6x +24 -(x² -4) = -2

x² -10x -x² +4 = -2 -24

-10x +4 = -26

-10x = -30

x = 3