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манюня2015
@манюня2015
August 2022
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x1 + x2 = -4
x1 * x2 = -3
найдите чему равен х1 и х2
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Kotecki
X1=-4-x2
(-4-x2)*x2=-3
-4*x2-x2^2=-3
-x2^2-4*x2+3=0
x2^2+4*x2-3=0
D=16-4*1*3=4
x2=(-4+2)/2=-1 x1=-3
x2=(-4-2)/2=-3 x1=-1
Ответ: x1=-3,x2=-1;x1=-1,x2=-3
2 votes
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Answers & Comments
(-4-x2)*x2=-3
-4*x2-x2^2=-3
-x2^2-4*x2+3=0
x2^2+4*x2-3=0
D=16-4*1*3=4
x2=(-4+2)/2=-1 x1=-3
x2=(-4-2)/2=-3 x1=-1
Ответ: x1=-3,x2=-1;x1=-1,x2=-3