1)√х+1 =3
(√х+1)² = 3²
х+1=9
х=8
2)√х-2=5
(√х-2)²=5²
х-2=25
х=27
3)√4+х=√2х-1
(√4+х)²=(√2х-1)²
4+х=2х-1
х=3
1)√х+1 =3
(√х+1)² = 3²
х+1=9
х=8
2)√х-2=5
(√х-2)²=5²
х-2=25
х=27
3)√4+х=√2х-1
(√4+х)²=(√2х-1)²
4+х=2х-1
х=3