【数学化简求值】(x-2)×(x²-4)分之2x+(x+2)分之4【数学化简求值】(x-2)×(x²-4)分之2x+(x+2)分之4【1-(x-1)分之1】÷(x²-2x-1)分之(x²-4)x=-1【分式方程】3/x-2 + 1/2-x
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/29 18:04:30
![【数学化简求值】(x-2)×(x²-4)分之2x+(x+2)分之4【数学化简求值】(x-2)×(x²-4)分之2x+(x+2)分之4【1-(x-1)分之1】÷(x²-2x-1)分之(x²-4)x=-1【分式方程】3/x-2 + 1/2-x](/uploads/image/z/978667-43-7.jpg?t=%E3%80%90%E6%95%B0%E5%AD%A6%E5%8C%96%E7%AE%80%E6%B1%82%E5%80%BC%E3%80%91%EF%BC%88x-2%EF%BC%89%C3%97%EF%BC%88x%26%23178%3B-4%EF%BC%89%E5%88%86%E4%B9%8B2x%2B%EF%BC%88x%2B2%EF%BC%89%E5%88%86%E4%B9%8B4%E3%80%90%E6%95%B0%E5%AD%A6%E5%8C%96%E7%AE%80%E6%B1%82%E5%80%BC%E3%80%91%EF%BC%88x-2%EF%BC%89%C3%97%EF%BC%88x%26%23178%3B-4%EF%BC%89%E5%88%86%E4%B9%8B2x%2B%EF%BC%88x%2B2%EF%BC%89%E5%88%86%E4%B9%8B4%E3%80%901-%EF%BC%88x-1%EF%BC%89%E5%88%86%E4%B9%8B1%E3%80%91%C3%B7%EF%BC%88x%26%23178%3B-2x-1%EF%BC%89%E5%88%86%E4%B9%8B%EF%BC%88x%26%23178%3B-4%EF%BC%89x%3D-1%E3%80%90%E5%88%86%E5%BC%8F%E6%96%B9%E7%A8%8B%E3%80%913%2Fx-2+%2B+1%2F2-x)
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【数学化简求值】(x-2)×(x²-4)分之2x+(x+2)分之4【数学化简求值】(x-2)×(x²-4)分之2x+(x+2)分之4【1-(x-1)分之1】÷(x²-2x-1)分之(x²-4)x=-1【分式方程】3/x-2 + 1/2-x
【数学化简求值】(x-2)×(x²-4)分之2x+(x+2)分之4
【数学化简求值】
(x-2)×(x²-4)分之2x+(x+2)分之4
【1-(x-1)分之1】÷(x²-2x-1)分之(x²-4)
x=-1
【分式方程】
3/x-2 + 1/2-x = 1
x-2/x+2 = 1 - 4/x²-4
【数学化简求值】(x-2)×(x²-4)分之2x+(x+2)分之4【数学化简求值】(x-2)×(x²-4)分之2x+(x+2)分之4【1-(x-1)分之1】÷(x²-2x-1)分之(x²-4)x=-1【分式方程】3/x-2 + 1/2-x
=(x-2)×2x/(x+2)(x-2)+4/(x+2)
=2x/(x+2)+4/(x+2)
=(2x+4)/(x+2)
=2
2、(x-1-1)/(x-1) ×(x-1)²/(x+2)(x-2)
=(x-2)/(x-1) ×(x-1)²/(x+2)(x-2)
=(x-1)/(x+2)
3 、两边乘以(x-2)得
3-1=x-2
x=4
检验:x=4是方程的解
4、两边乘以(x+2)(x-2)得
x²-4x+4=x²-4-4
-4x=-12
x=3
检验:x=3是方程的解