问题描述:
运用乘法公式计算 速求,要有过程
(x-3))(x+3)(x²+9))
(x-1)(x+1)
(x+2y-3)(x-2y-3)
(x+y)²(x-y)²
(m-n+3)(m+n-3)
(x-3))(x+3)(x²+9))
(x-1)(x+1)
(x+2y-3)(x-2y-3)
(x+y)²(x-y)²
(m-n+3)(m+n-3)
问题解答:
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