若(x-y)(x-3-y)=10,则x-y的值是?
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若(x-y)(x-3-y)=10,则x-y的值是?
若(x-y)(x-3-y)=10,则x-y的值是?
若(x-y)(x-3-y)=10,则x-y的值是?
设 x-y为m 则原式为m*(m-3)=10 解得m=5或-2
若x-y不等于0,2x-3y=0,则分式(10x-11y)/(x-y)的值是()?(10x-11y)/(x-y) =[(8x-8y)+(2x-3y)]/(x-y) =8为什么8X-8Y=8?(10x-11y)/(x-y)=[(8x-8y)+(2x-3y)]/(x-y)=8+(2x-3y)]/(x-y)=8+0=8
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若2x=3y,则(x*x+y*y)/x*x=?
若x:y=3则x:(x+y)=
若x/2=y/3,且x+y=10,则x=?y=?
若x和y互为相反数,则3x-10+3y+y/5x=
若x-y=2,x²-y²=10,则3x+y等于
若x-y=2,x²-y²=10,则3x-y=
若(x-y)(x-3-y)=10,则x-y的值是?
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若3x=5y,则x:y=________,(x-y):y=______
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若(5x+y)(7x+10y)=1/2,则x/y=______;若x+1/x=3,则x^2+1/x^2
比例线段若x+y/x-y=4/3,则x/y=x+y/x-y=4/3,则x/y=要快~~
若3x-5y=0,则x+y/x=(),x-y/y=(),2x-3y/2x+3y=( )
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若x+2y分之x-y=3,则代数式x+2y分之2(x-y)-3(x-y)分之x+2y的值为