X(во второй степени )+х-6=0
Х² + х - 6 = 0 D = b2 - 4ac = 12 - 4·1·(-6) = 1 + 24 = 25 - 1 - √25 х₁ = -------------- = - 6/2 = - 3 2 * 1 -1 + √25 х₂ = ---------------= 4/2 = 2 2 * 1
(X+3).(x-2)=0 X=2 X=-3 X^2+x-6