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lakOR555
@lakOR555
July 2022
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x+7 x+4
___ + ___ = 1
x - 2 x+2
В УРАВНЕНИИ 2 КОРНЯ???
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shketfairy
((x+7)(x+2)+(x+4)(x-2))/(x-2)(x+2)=1
x^2+2x+7x+14+x^2-2x+4x-8=x^2-4
2x^2+11x+6=x^2-4
x^2+11x+10=0
D=121-4*10=81
x1=(-11+9)/2=-1
x2=-20/2=-10
Ответ: -1; -10
Да,уравнение имеет два корня
1 votes
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Answers & Comments
x^2+2x+7x+14+x^2-2x+4x-8=x^2-4
2x^2+11x+6=x^2-4
x^2+11x+10=0
D=121-4*10=81
x1=(-11+9)/2=-1
x2=-20/2=-10
Ответ: -1; -10
Да,уравнение имеет два корня