【数学分式计算,要过程】【(a²-1)分之4】-【(a²+a)分之2】【分式加减,要过程】【(a²-1)分之4】-【(a²+a)分之2】【(5a-20)分之1】+【(a²-8a+16)分之5】【(x-1)分
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![【数学分式计算,要过程】【(a²-1)分之4】-【(a²+a)分之2】【分式加减,要过程】【(a²-1)分之4】-【(a²+a)分之2】【(5a-20)分之1】+【(a²-8a+16)分之5】【(x-1)分](/uploads/image/z/264072-48-2.jpg?t=%E3%80%90%E6%95%B0%E5%AD%A6%E5%88%86%E5%BC%8F%E8%AE%A1%E7%AE%97%2C%E8%A6%81%E8%BF%87%E7%A8%8B%E3%80%91%E3%80%90%EF%BC%88a%26%23178%3B-1%EF%BC%89%E5%88%86%E4%B9%8B4%E3%80%91-%E3%80%90%EF%BC%88a%26%23178%3B%2Ba%EF%BC%89%E5%88%86%E4%B9%8B2%E3%80%91%E3%80%90%E5%88%86%E5%BC%8F%E5%8A%A0%E5%87%8F%2C%E8%A6%81%E8%BF%87%E7%A8%8B%E3%80%91%E3%80%90%EF%BC%88a%26%23178%3B-1%EF%BC%89%E5%88%86%E4%B9%8B4%E3%80%91-%E3%80%90%EF%BC%88a%26%23178%3B%2Ba%EF%BC%89%E5%88%86%E4%B9%8B2%E3%80%91%E3%80%90%EF%BC%885a-20%EF%BC%89%E5%88%86%E4%B9%8B1%E3%80%91%2B%E3%80%90%EF%BC%88a%26%23178%3B-8a%2B16%EF%BC%89%E5%88%86%E4%B9%8B5%E3%80%91%E3%80%90%EF%BC%88x-1%EF%BC%89%E5%88%86)
【数学分式计算,要过程】【(a²-1)分之4】-【(a²+a)分之2】【分式加减,要过程】【(a²-1)分之4】-【(a²+a)分之2】【(5a-20)分之1】+【(a²-8a+16)分之5】【(x-1)分
【数学分式计算,要过程】【(a²-1)分之4】-【(a²+a)分之2】
【分式加减,要过程】
【(a²-1)分之4】-【(a²+a)分之2】
【(5a-20)分之1】+【(a²-8a+16)分之5】
【(x-1)分之x²】-x-1
【数学分式计算,要过程】【(a²-1)分之4】-【(a²+a)分之2】【分式加减,要过程】【(a²-1)分之4】-【(a²+a)分之2】【(5a-20)分之1】+【(a²-8a+16)分之5】【(x-1)分
1、4/(a+1)(a-1)-2/a(a+1)
=4a/a(a+1)(a-1)-2(a-1)/a(a+1)(a-1)
=(4a-2a+2)/a(a+1)(a-1)
=2(a+1)/a(a+1)(a-1)
=2/(a²+a)
2、=1/5(a-4)+5/(a-4)²
=(a-4)/5(a-4)²+25/5(a-4)²
=(a+21)/5(a-4)²
3、=x²/(x-1)-(x+1)(x-1)/(x-1)
=(x²-x²+1)/(x-1)
=1/(x-1)