10(y+z)(y+z)-29(y+z+10)分解因式
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10(y+z)(y+z)-29(y+z+10)分解因式
x-y/(z-x)(z-y) 一y-z/(x-y)(x-z) +z-x/(y-z)(y-x)
x y y ...y z x y ...y z z x ...y ........z z z ...x 求解行列式.
x^-(y-z)^/(x+y)^-z^
计算(x+y-z)(x-y-z)
计算:(x-y+z)(-x+y+z)
(x+y-z)(x-y+z)=
解方程组:{x(x+y+z)=6 {y(x+y+z)=9 {z(x+y+z)=10
x/10=y/5=z/7 x+y+2z=29 求x y z
x+y=8 y+z=12 x+z=10 x+y+z=
x+y=8 y+z=12 x+z=10 x+y+z=
若X/10=Y/8=Z/9则X+Y+Z/Y+Z=?
X/10=Y/8=Z/9,则X+Y+Z/2Y-3Z
x+y+z=15 x+5y+10z=70 x,y,z,各是几?
X+Y+Z=15 X+5Y+10Z=70,Y.Z的值
x+y+z=15 x+5y+10z=70 x,y,z,各是几?
X+Y-Z=15 X+5Y+10Z=70 求:X、Y、Z
x+y>z 0