Răspuns:
2(x + 15)² = 32 | : 2
(x + 15)² = 16
x + 15 = ± 4
x + 15 = 4 => x = 4 - 15 = - 11
x + 15 = - 4 => x = - 4 - 15 = - 19
3(x - 12)² = 75 | : 3
(x - 12)² = 25
x - 12 = ± 5
x - 12 = 5 => x = 17
x - 12 = - 5 => x = 7
4(4x + 1)² = 36 | : 4
(4x + 1)² = 9
4x + 1 = ± 3
4x + 1 = 3 => 4x = 2 => x = 1/2
4x + 1 = - 3 => 4x = - 4 => x = - 1
7(3 - 5x)² = 28 | : 7
(3 - 5x)² = 4
3 - 5x = ± 2
3 - 5x = 2 => 1 = 5x => x = 1/5
3 - 5x = - 2 => 5 = 5x => x = 1
