(2013x)²-2012*2014x-1=0
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/27 04:08:46
(2013x)²-2012*2014x-1=0(2013x)²-2012*2014x-1=0(2013x)²-2012*2014x-1=0(2013x)²-20
(2013x)²-2012*2014x-1=0
(2013x)²-2012*2014x-1=0
(2013x)²-2012*2014x-1=0
(2013x)²-2012*2014x-1=0
(2013x)²-(2013²-1)x-1=0
(2013²x+1)(x-1)=0
x=-1/2013²或x=1
左式=(2013x)²-(2013-1)*(2013+1)x-1
=2013²x²-(2013²-1)x-1
=(2013²x+1)(x-1)=0
x=1或x=-1/2013²
一元二次方程求根公式:
当Δ=b^2-4ac≥0时,x=[-b±(b^2-4ac)^(1/2)]/2a
当Δ=b^2-4ac<0时,x={-b±[(4ac-b^2)^(1/2)]i}/2a(i是虚数单位)
a=2013^2=4052169
b=-2012*2014=4054182
c=-1