Ответ:
(6 +- sqrt(60))/2
Объяснение:
-(1+2x-x^2)-(3x+5) = x
x^2 - 2x - 1 - 3x - 5 = x
x^2 -5x -x - 6 = 0
x^2 - 6x - 6 = 0
D = 36+24=60
x1 = (6 + sqrt(60))/2
x2 = (6 - sqrt(60))/2
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Ответ:
(6 +- sqrt(60))/2
Объяснение:
-(1+2x-x^2)-(3x+5) = x
x^2 - 2x - 1 - 3x - 5 = x
x^2 -5x -x - 6 = 0
x^2 - 6x - 6 = 0
D = 36+24=60
x1 = (6 + sqrt(60))/2
x2 = (6 - sqrt(60))/2