解方程:2x2−12x2−5=2x2+6x−24x2+3x−11.

问题描述:

解方程:

2x2−12
x2−5
=
2x2+6x−24
x2+3x−11

2x2−12
x2−5
=
2x2+6x−24
x2+3x−11

x2−6
x2−5
x2+3x−12
x2+3x−11

x2−5−1
x2−5
x2+3x−11−1
x2+3x−11

∴1+
−1
x2−5
=1+
−1
x2+3x−11

∴x2-5=x2+3x-11,
∴x=2.
检验:当x=2时,左边=右边,
∴x=2是原分式方程的根.