约分 16-x²分之4x-x² 3x²+6xy+3y²分之x²-y平方 16-x²分之4x-x²3x²+6xy+3y²分之x²-y
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![约分 16-x²分之4x-x² 3x²+6xy+3y²分之x²-y平方 16-x²分之4x-x²3x²+6xy+3y²分之x²-y](/uploads/image/z/1344343-31-3.jpg?t=%E7%BA%A6%E5%88%86+16-x%26%23178%3B%E5%88%86%E4%B9%8B4x-x%26%23178%3B+3x%26%23178%3B%2B6xy%2B3y%26%23178%3B%E5%88%86%E4%B9%8Bx%26%23178%3B-y%E5%B9%B3%E6%96%B9+16-x%26%23178%3B%E5%88%86%E4%B9%8B4x-x%26%23178%3B3x%26%23178%3B%2B6xy%2B3y%26%23178%3B%E5%88%86%E4%B9%8Bx%26%23178%3B-y)
约分 16-x²分之4x-x² 3x²+6xy+3y²分之x²-y平方 16-x²分之4x-x²3x²+6xy+3y²分之x²-y
约分 16-x²分之4x-x² 3x²+6xy+3y²分之x²-y平方
16-x²分之4x-x²
3x²+6xy+3y²分之x²-y
约分 16-x²分之4x-x² 3x²+6xy+3y²分之x²-y平方 16-x²分之4x-x²3x²+6xy+3y²分之x²-y
16-x²分之4x-x² =x(4-x)/[(4-x)(4+x)]=x/(x+4)
3x²+6xy+3y²分之x²-y平方
=(x+y)(x-y)/[3(x+y)²]
=(x-y)/﹙3x+3y)
(4x-x^2)/(16-x^2)
=x(4-x)/(4+x)(4-x)
=x/(4+x)
(x^2-y^2)/(3x^2+6xy+3y^2)
=(x-y)(x+y)/3(x+y)^2
=(x-y)/3(x+y)