用计算器解下列方程x平方+x-1=0,x平方-1.3x+0.16=0

问题描述:

用计算器解下列方程x平方+x-1=0,x平方-1.3x+0.16=0

x^2+x-1=0
x1,2=(-1±√5)/2
x1=0.618033988749895
x2=-1.61803398874989
x^2-1.3x+0.16=0
x1,2=(1.3±√1.05)/2
x1=1.16234753829798
x2=0.13765246170202