因式分解 (x-y)²-16(x+y)²
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/14 10:07:40
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因式分解 (x-y)²-16(x+y)²
因式分解 (x-y)²-16(x+y)²
因式分解 (x-y)²-16(x+y)²
(x-y)²-16(x+y)²
= (x-y +4x+4y) (x-y-4x-4y)
= -(5x +3y) (3x + 5y)