
一元二次方程求解,答案麻烦全一点
2个回答
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(1):x^2-6 x+5= 0
x^2-6x+5+4= 4
(x-3)^2= 4
x-3= ±2
x1= 2+3= 5
x2= -2+3= 1
(2): x^2-6x+5= 0
(x-1)(x-5)= 0
x1-1= 0
x1= 1
x2-5= 0
x2= 5
x^2-6x+5+4= 4
(x-3)^2= 4
x-3= ±2
x1= 2+3= 5
x2= -2+3= 1
(2): x^2-6x+5= 0
(x-1)(x-5)= 0
x1-1= 0
x1= 1
x2-5= 0
x2= 5
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