x加x分之一等于4.25x等于?
问题描述:
x加x分之一等于4.25
x等于?
答
x+(1/x)=17/4
x^2+1=17x/4 4x^2-17x+4=0
(4x-1)(x-4)=0 所以x=1/4或x=4
答
4?
答
x+ 1/x = 4.25
(1+x^)/x=4.25
1+x^=4.25x
x= 4
答
x+1/x=4.25
x²-4.25x+1=0
(x-4)(x-0.25)=0
x=4,x=0.25
答
X+1/X=4.25
X=4
答
x+1/x=4.25
x^2+1=4.25x
x^2-4.25x+1=0
(x-4)(x-0.25)=0
x1=4,x2=0.25
答
x的平方+1=4.25x
x的平方=1/16或16
x=1/4或4
答
x+1/x=4.25
两边同时乘以x
x*x -17/4x+1=0
两边同时乘以4
4x*x-17x+4=0
(4x-1)(x-4)=0
解得x=4或者x=1/4
答
4或0.25
答
x+1/x=17/4
(x²+1)/x=17/4
4x²-17x+4=0
(x-4)(4x-1)=0
x=4,x=1/4
答
4