【数学分式计算题,要过程】(3y²)分之(2x²)*(6x)分之(5y)+(21x²)分之(10y)【数学分式计算题,(3y²)分之(2x²)*(6x)分之(5y)+(21x²)分之(10y)(a²-2
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![【数学分式计算题,要过程】(3y²)分之(2x²)*(6x)分之(5y)+(21x²)分之(10y)【数学分式计算题,(3y²)分之(2x²)*(6x)分之(5y)+(21x²)分之(10y)(a²-2](/uploads/image/z/249947-35-7.jpg?t=%E3%80%90%E6%95%B0%E5%AD%A6%E5%88%86%E5%BC%8F%E8%AE%A1%E7%AE%97%E9%A2%98%2C%E8%A6%81%E8%BF%87%E7%A8%8B%E3%80%91%EF%BC%883y%26%23178%3B%EF%BC%89%E5%88%86%E4%B9%8B%EF%BC%882x%26%23178%3B%EF%BC%89%2A%EF%BC%886x%EF%BC%89%E5%88%86%E4%B9%8B%EF%BC%885y%EF%BC%89%2B%EF%BC%8821x%26%23178%3B%EF%BC%89%E5%88%86%E4%B9%8B%EF%BC%8810y%EF%BC%89%E3%80%90%E6%95%B0%E5%AD%A6%E5%88%86%E5%BC%8F%E8%AE%A1%E7%AE%97%E9%A2%98%2C%EF%BC%883y%26%23178%3B%EF%BC%89%E5%88%86%E4%B9%8B%EF%BC%882x%26%23178%3B%EF%BC%89%2A%EF%BC%886x%EF%BC%89%E5%88%86%E4%B9%8B%EF%BC%885y%EF%BC%89%2B%EF%BC%8821x%26%23178%3B%EF%BC%89%E5%88%86%E4%B9%8B%EF%BC%8810y%EF%BC%89%EF%BC%88a%26%23178%3B-2)
【数学分式计算题,要过程】(3y²)分之(2x²)*(6x)分之(5y)+(21x²)分之(10y)【数学分式计算题,(3y²)分之(2x²)*(6x)分之(5y)+(21x²)分之(10y)(a²-2
【数学分式计算题,要过程】(3y²)分之(2x²)*(6x)分之(5y)+(21x²)分之(10y)
【数学分式计算题,
(3y²)分之(2x²)*(6x)分之(5y)+(21x²)分之(10y)
(a²-2a)分之(a+2)*(a+2)分之(a²-4a+4)
(a²-4)分之(2a)-(a-2)分之1
(a²-1)分之(a²+2a+1)-(a-1)分之1
【数学分式计算题,要过程】(3y²)分之(2x²)*(6x)分之(5y)+(21x²)分之(10y)【数学分式计算题,(3y²)分之(2x²)*(6x)分之(5y)+(21x²)分之(10y)(a²-2
(3y²)分之(2x²)×(6x)分之(5y)+(21x²)分之(10y)
=(9y)分之(5x)+(21x²)分之(10y)
=(63x²y)分之(35x³+30y²)
(a²-2a)分之(a+2)×(a+2)分之(a²-4a+4)
=[a(a-2)]分之(a+2)×(a+2)分之(a-2)²
=a分之(a-2)
(a²-4)分之(2a)-(a-2)分之1
=[(a+2)(a-2)]分之[2a-(a+2)]
=[(a+2)(a-2)]分之(a-2)
=(a+2)分之1
(a²-1)分之(a²+2a+1)-(a-1)分之1
=[(a+1)(a-1)]分之(a+1)²-(a-1)分之1
=(a-1)分之(a+1)-(a-1)分之1
=(a-1)分之a
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