计算(x-2y+3x)(x+2y+3z)
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2(x+y-z)-3(x-y+z)-5(x+y-z)+6(x-y+z) 计算
计算(X+3Y+2X)(-X-3y-2Z)计算(X+3Y+2X)(-X-3y-2Z)计算(X+3Y+2X)(-X-3y-2Z)计算(X+3Y+2X)(-X-3y-2Z)计算(X+3Y+2X)(-X-3y-2Z)计算(X+3Y+2X)(-X-3y-2Z)计算(X+3Y+2X)(-X-3y-2Z)计算(X+3Y+2X)(-X-3y-2Z)计算(X+3Y+2X)(-X-3y-2Z)计算(X+3Y+2X)(-X-3y-2Z)
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计算(x-y-z)^2
补充习题 9.计算{x-2y+3z}{x+2y-3z}计算{x-2y+3z}{x+2y-3z}
计算:(y-x)(z-x)/(x-2y+z)(x+y-2z)+(z-y)(x-y)/(x+y-2z)(y+z-2x)+(x-z)(y-z)/(y+z-2x)(x-2y+z)
计算(x+2y-3z)^2+(x-2y+3z)(x+2y-3z)
(x+2y+3z)-(3x+2y-z)+(2x-3y+4z) 用直式计算
计算(x+2y-3z)的平方+(x-2y+3z)(x+2y-3z)
计算①(2x+y-3z)²;②y(x+y)+(x-y)²-x²-2y².
试证明(x+y-2z)+(y+z-2x)+(z+x-2y)=3(x+y-2z)(y+z-2x)(z+x-2y)
已知(x+y)(x+z)=x,(y+z)(y+x)=2y,(z+x)(z+y)=3z,求x,y,z
计算X+2Y+3Z=10X+2Y+3Z=104X+3Y+2Z=15求x+y+z=?
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计算(x-2y+z)(z-x-2y),