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shahhsshbdbtt
@shahhsshbdbtt
July 2023
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9 КЛАС ЛЮДИ РОЗВ'ЯЖІТЬ ЯК В ШКОЛІ ХТОСЬ БУДЬ ЛАСКА!!
Зробити способом додавання
4х+ху=-24
у-ху=12
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maki81443
x(4+y)=-24
y(2-x)=12
y = 12/2-x
x(4+12/2-x) = -24
-24/x=4+ 12/(2-x)
4(2-x)x + 12*x = -24(2-x)
8x-4*x^2 + 12x = -48 + 24x
4*x^2 + 4x - 48 = 0
x^2+x-12= 0
(x+4)(x-3)= 0
x1 = 3 x2=-4
y1 = -12 y2 =2
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Report "9 КЛАС ЛЮДИ РОЗВ'ЯЖІТЬ ЯК В ШКОЛІ ХТОСЬ БУДЬ ЛАСКА!! Зробити способом додавання4х+ху=-24у-ху=12"
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Answers & Comments
y(2-x)=12
y = 12/2-x
x(4+12/2-x) = -24
-24/x=4+ 12/(2-x)
4(2-x)x + 12*x = -24(2-x)
8x-4*x^2 + 12x = -48 + 24x
4*x^2 + 4x - 48 = 0
x^2+x-12= 0
(x+4)(x-3)= 0
x1 = 3 x2=-4
y1 = -12 y2 =2