60⼀x+5=60⼀(x-1)

60/x+5=60/(x-1)
2024-12-31 22:00:24
推荐回答(5个)
回答1:

方程两边同乘以x(x-1)得
60(x-1) + 5x(x-1) = 60x
60x - 60 + 5x² - 5x = 60x
5x² - 5x - 60 = 0
x² - x - 12 = 0
用十字交叉法可得
(x+3)(x-4) = 0
解得x=-3或者x=4,代入原方程验证通过,故原方程的根是x=-3或x=4

回答2:

x=-3
x=4

回答3:

(60+5x)/x=60/(x-1)
5x^2+55x-60=60x
x^2-x-12=0
(x-4)(x+3)=0
x1=4,x2=-3

回答4:

60(x-1)+5x(x-1)=60x
-60+5x(x-1)=0
(x+3)(x-4)=0
x=-3,4

回答5:

(60+5x)/x=60/(x-1)
5x^2+55x-60=60x
x^2-x-12=0
(x-4)(x+3)=0
x1=4,x2=-3
^ 是指平方