(x-y+z)(x+y-z)等于?要求化简用平方差公式计算 另一个是1/2(1+1/2)(1+1/4)(1+1/16)平方差公式计算
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(x+y-z)*(x+y-z)-(x-y+z)*(x-y-z)等于多少
(x-y+z)(x+y+z)等于多少.
(x+y-z)乘以(x-y-z)等于?
(x-y-z)乘以(z-x+y)等于?
(x-y+z)(x+y+z)等于多少?
(x+y-z)(x-y+z)-(x+y+z)(x-y-z)
(x+y+z)(x-y+z)+(y-x+z)(y-x-z)求过程
七年级数学(x+y-z)(x-y+z)等于?要求化简用平方差公式计算.
(x+y+z)(-x+y+z)(x-y+z)(x+y-z)等于什么?
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(x+y+z)²-(x-y-z)²
(x-2y+z)(-x+2y+z)