填空题 4..5(x-y+z)(-x+y+z)[z+(____)][_ __ __ _]=z^2-(____)^2,5,(-a+b+c)(a+b-c)=[b-(_____)] [b+(______)]=[_______]

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填空题 4..5(x-y+z)(-x+y+z)[z+(____)][_ __ __ _]=z^2-(____)^2,5,(-a+b+c)(a+b-c)=[b-(_____)] [b+(______)]=[_______]
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填空题 4..5(x-y+z)(-x+y+z)[z+(____)][_ __ __ _]=z^2-(____)^2,5,(-a+b+c)(a+b-c)=[b-(_____)] [b+(______)]=[_______]
填空题 4..5
(x-y+z)(-x+y+z)[z+(____)][_ __ __ _]=z^2-(____)^2,5,(-a+b+c)(a+b-c)=[b-(_____)] [b+(______)]=[_______]

填空题 4..5(x-y+z)(-x+y+z)[z+(____)][_ __ __ _]=z^2-(____)^2,5,(-a+b+c)(a+b-c)=[b-(_____)] [b+(______)]=[_______]
(x-y+z)(-x+y+z)[z+(x-y)][z- (x-y)]=z^2-(x-y)^2,
5.(-a+b+c)(a+b-c)=[b-(a-c)] [b+(a-c)]=[b^2-(a-c)^2]

已知x/2=y/7=z/5,设A=/x+y+z,B=x+z/y,C=x+y-z/x,那么A、B、C的大小顺序为____(填空题) (x-y-z)*( )=x^2-(y+z)^2 填空 填空x+y-z=x+( )=x-( )填空x+y-z=x+()=x-() 填空题 4..5(x-y+z)(-x+y+z)[z+(____)][_ __ __ _]=z^2-(____)^2,5,(-a+b+c)(a+b-c)=[b-(_____)] [b+(______)]=[_______] 填空a(x+y-z)+b(x+y-z)-c(x+y-z)=(x+y-z)乘以() 填空:(x-y-z)(_________)=x^2-(y+z)^2 (x+y-z)(x-y+z)-(x+y+z)(x-y-z) 因式分解测试题x(x+y-z)+y(x+y-z)+z(z-x-y) (x+y-z)*(x+y-z)-(x-y+z)*(x-y-z)等于多少 (x+y+z)(x-y+z)+(y-x+z)(y-x-z)求过程 填空题1.已知x+4y-3z=0,4x-5y+2z=0,则x:y:z=_______.2.已知x=1-t,y=2-3t,用x的代数式表示y=_______.若2x+5y+4z=0,3x+y-7z=0,则x+y-z的值等于( )A.0 B.1 C.2 D.无法求出【不仅要答案,还要解析,】 x分之y+z=y分之z+x=z分之x+y(x+y+z不等于0),求x+y+z分之x+y-z 分式加减法:已知x+y/z=x+z/y=y+z/x(x+y+z≠0),求x+y-z/x+y+z 已知x+y/z=x+z/y=y+z/x(x+y+z≠0),求x+y-z/x+y+z的步骤 已知x+y/z=x+z/y=y+z/x(x+y+z≠0),求x+y-z/x+y+z的步骤 填空题 写答案就可以了解方程组 2x-y+3z=33x+y-2z=-1x+y+z=5 (1)若先消去X,得到关于y,z 的方程组是 (2)若先消去y,得到关于x,z 的方程组是 (3)若先消去z,得到关于x,y 的方程组是 运用多项式的乘法公式计算 (Z+Y)(X方-XY+Y方).1、(Z+Y)(X方-XY+Y方)=(X-Y)(X方+XY+Y方)=2、根据第一题中所得的两个等式,我们得到因式分解的两个公式.填空:_________=(Z+Y)(X方-XY+Y方)_________=(X-Y)(X方+ C语言题 x,y,z为int型变量,且x=3,y=-4,z=5,(x>y)+(y!=z)‖(x+y)&&(y-z)的值为几