【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,要过程】(3y²)分之(2x²)*(6x)分之(5y)+(21x²)分之(10y)
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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,要过程】(3y²)分之(2x²)*(6x)分之(5y)+(21x²)分之(10y)](/uploads/image/z/444644-44-4.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%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)
【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,要过程】(3y²)分之(2x²)*(6x)分之(5y)+(21x²)分之(10y)
【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,要过程】
(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
第一题打错了 应该是:(3y²)分之(2x²)*(6x)分之(5y)÷(21x²)分之(10y)
【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,要过程】(3y²)分之(2x²)*(6x)分之(5y)+(21x²)分之(10y)
1、2x²/3y²×5y/6÷10y/21x²
=5x/9y×21x²/10y
=7x³/6y²
2、(a+2)/a(a-2)×(a-2)²/(a+2)
=(a-2)/a
3、2a/(a+2)(a-2)-(a+2)/(a+2)(a-2)
=(2a-a-2)/(a+2)(a-2)
=1/(a-2)
4、(a+1)²/(a+1)(a-1)-1/(a-1)
=(a+1)/(a-1)-1/(a-1)
=a/(a-1)