Question

уровнение (2х-3)*(2х+3)=4х*(х+1)-1

Answer 1

4Х2+6Х-6Х-9 = 4Х2+4Х-1
4Х2 - 4Х2 + 4Х = -1 + 9
4Х  = 8
Х = 2

Answer 2

(2х-3)*(2х+3)=4х*(х+1)-14х2+6х-6х-9=4х2+4х-1
4х2-4х2+4х=-1+9
4х=8
х=2