25x²+40x(y-x)+16(x-y)²
25x²-40x(x-y)+16(x-y)²
=[5x-4(x-y)]²
=(x+4y)²
因式分解25x的平方+40x(y-x)+16(x-y)的平方
因式分解25x的平方+40x(y-x)+16(x-y)的平方
数学人气:399 ℃时间:2020-02-05 15:27:50
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