(2x-3)²=(2x+1)(2x-5)+3x-14
4х²-12х+9=4х²-10х+2х-5+3х-14
4х²-12х+9=4х²-5х-19
4х²-12х+9-4х²+5х+19=0
-7х+28=0
-7х=-28
х=4
(2x-3)²=(2x+1)(2x-5)+3x-14
4х²-12х+9=4х²-10х+2х-5+3х-14
4х²-12х+9=4х²-5х-19
4х²-12х+9-4х²+5х+19=0
-7х+28=0
-7х=-28
х=4
Удачи!