1./x-100/+/y+1/49/+/z+0.1/=0则XYZ 2.如果-XYZ
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1./x-100/+/y+1/49/+/z+0.1/=0则XYZ2.如果-XYZ1./x-100/+/y+1/49/+/z+0.1/=0则XYZ2.如果-XYZ1./x-100/+/y+1/49/+/
1./x-100/+/y+1/49/+/z+0.1/=0则XYZ 2.如果-XYZ
1./x-100/+/y+1/49/+/z+0.1/=0则XYZ 2.如果-XYZ
1./x-100/+/y+1/49/+/z+0.1/=0则XYZ 2.如果-XYZ
X-100=0所以X=100
大于
感激不尽1.x,y满足(x-y-1)(x+y)
因式分解 1.(x+p)^2-(x+y)^2 2.36(x+y)^2-49(x-y)^2 3.(x^2+x+1)^2-1
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(x+y)(x-y)+4(y-1)
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1/5x^2y-x^4-y^2/100
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(1)36(x+y)二次-49(x-y)二次(2)(x+y)二次/4-(x-y)二次/4
2x+4y=100 x+y=49求x和y值,
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