(2x+3y)²-(3x-2y)²分解因式
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(2x+3y)²-(3x-2y)²分解因式
(2x+3y)²-(3x-2y)²分解因式
(2x+3y)²-(3x-2y)²分解因式
(5y-x)*(5x+y)
不
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(2x+3y)²-(3x-2y)²
=[(2x+3y)+(3x-2y)][(2x+3y)-(3x-2y)]
=(5x-y)(5y-x)
=-(5x-y)(x-5y)。-(x+2)²+16(x-1)²-(x+2)²+16(x-1)²
=-[(x+2)²-16(x-1)²]
=-{[...
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(2x+3y)²-(3x-2y)²
=[(2x+3y)+(3x-2y)][(2x+3y)-(3x-2y)]
=(5x-y)(5y-x)
=-(5x-y)(x-5y)。
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