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kirillovaol
@kirillovaol
July 2022
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как разложить на множители многочлен y^2-2y-3
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agressia666
y^2 -2y -3= 0
D = (-2)^2 - 4*(-3) = 4 + 12 = 16
x1 = (2 - √16) / ( 2 * 1) = (2 - 4)/2 = -1
x2 = (2 +4) /2 = 3
ax^2 +bx +c = a(x-x1)(x-x2)
y^2 -2y -3 = (x+1)(x-3)
Ответ:
(x+1)(x-3)
2 votes
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Answers & Comments
D = (-2)^2 - 4*(-3) = 4 + 12 = 16
x1 = (2 - √16) / ( 2 * 1) = (2 - 4)/2 = -1
x2 = (2 +4) /2 = 3
ax^2 +bx +c = a(x-x1)(x-x2)
y^2 -2y -3 = (x+1)(x-3)
Ответ:
(x+1)(x-3)