) 1、X²+3=3(X+1) 2、X(X - 3y)=4y(X - 3y),求X:y
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![) 1、X²+3=3(X+1) 2、X(X - 3y)=4y(X - 3y),求X:y](/uploads/image/z/5252344-16-4.jpg?t=%EF%BC%89+1%E3%80%81X%26%23178%3B%2B3%3D3%28X%2B1%29+2%E3%80%81X%EF%BC%88X+-+3y%EF%BC%89%3D4y%28X+-+3y%29%2C%E6%B1%82X%EF%BC%9Ay)
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) 1、X²+3=3(X+1) 2、X(X - 3y)=4y(X - 3y),求X:y
) 1、X²+3=3(X+1) 2、X(X - 3y)=4y(X - 3y),求X:y
) 1、X²+3=3(X+1) 2、X(X - 3y)=4y(X - 3y),求X:y
X²+3=3(X+1)
X²+3=3X+3
X²-3X=0
x(x-3)=0
x1=0,x2=3
X(X - 3y)=4y(X - 3y)
x²-3xy=4xy-12y²
x²-7xy+12y²=0
(x-3y)(x-4y)=0
x=3y或x=4y
所以x:y=3或x:y=4
1、X²-3X=0;X(X-3)=0;X=0或X=3。2、 X(X - 3y)=4y(X - 3y);X²-3Xy=4Xy-12y²;X²+12y²-7Xy=0;(X-3y)*(X-4y)=0;X=3y或X=4y;(1)当X=0时,y=0;(2)当X=3时,X:y=3或4
X²+3=3(X+1)
X²+3=3X+3
X²-3X=0
x(x-3)=0
x1=0,x2=3
X(X - 3y)=4y(X - 3y)
x²-3xy=4xy-12y²
x²-7xy+12y²=0
(x-3y)(x-4y)=0
x=3y或x=4y
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X²+3=3(X+1)
X²+3=3X+3
X²-3X=0
x(x-3)=0
x1=0,x2=3
X(X - 3y)=4y(X - 3y)
x²-3xy=4xy-12y²
x²-7xy+12y²=0
(x-3y)(x-4y)=0
x=3y或x=4y
x:y=3或x:y=4
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