а) 3х = (2х – 3)(2х + 3) – 4х^2;
3х= 4х^2-9- 4х^2
3х=-9
х=-3
б) (3х – 4)^2 – (3х + 2)^2 = –24.
9х^2-24х+16- 9х^2-12х-4+24=0
-36х=-36
х=1
а) 3х = (2х – 3)(2х + 3) – 4х^2;
3х= 4х^2-9- 4х^2
3х=-9
х=-3
б) (3х – 4)^2 – (3х + 2)^2 = –24.
9х^2-24х+16- 9х^2-12х-4+24=0
-36х=-36
х=1