6x^2 - 4x - 5 = x^2 - 3x - 1
5x^2 - x - 4 = 0
D = (-1)^2 - 4 * 5 * -4 = 81
x1;x2 = (1 ± 9) / (2*5) = 1; -0.8
Объяснение:
6x^2-4x-5-x^2-3x-1=0
5x^2-x-4=0
5x^2+4x-5x-4=0
X(5x+4)-(5x+4)=0
(5x+4)*(x-1)=0
5x+4=0 X-1=0
X=-4/5 X=1
6x^2 - 4x - 5 = x^2 - 3x - 1
5x^2 - x - 4 = 0
D = (-1)^2 - 4 * 5 * -4 = 81
x1;x2 = (1 ± 9) / (2*5) = 1; -0.8
Объяснение:
6x^2-4x-5-x^2-3x-1=0
5x^2-x-4=0
5x^2+4x-5x-4=0
X(5x+4)-(5x+4)=0
(5x+4)*(x-1)=0
5x+4=0 X-1=0
X=-4/5 X=1