因式分解x²+8xy-8y²

291fever2022-10-04 11:39:541条回答

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枯萎的紫腾树 共回答了17个问题 | 采纳率82.4%
x²+8xy-8y²
=x²+2×4xy+(4y)²-(4y)²-8y²
=(x+4y)²-24y²
=(x+4y+2√6y)(x+4y-2√6y)
1年前

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