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
答
∵
=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+−1
x2−5
,−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.