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DIGIkiri4
@DIGIkiri4
July 2022
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Выручайте!
Не могу решить уравнение!
(Х+5)(х-4)+х^2+18=0
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AnonimusPro
Verified answer
X^2-4x+5x-20+x^2+18=0
2x^2+x-2=0
D=1+16=17
x1=(-1+sqrt(17))/4
x2=(-1-sqrt(17))/4
Ответ: x1=(-1+sqrt(17))/4; x2=(-1-sqrt(17))/4
2 votes
Thanks 2
DIGIkiri4
Спасибо огромное
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Answers & Comments
Verified answer
X^2-4x+5x-20+x^2+18=02x^2+x-2=0
D=1+16=17
x1=(-1+sqrt(17))/4
x2=(-1-sqrt(17))/4
Ответ: x1=(-1+sqrt(17))/4; x2=(-1-sqrt(17))/4