$(2x - 3)^2 = 25$
$(2x - 3)^2 = (±5)^2$
2x − 3 = −5
2x = −5 + 3
2x = −2
x = −1
или
2x − 3 = 5
2x = 5 + 3
2x = 8
x = 4
Ответ: −1 и 4

$(x - 3)^2 = 7$
$x - 3 = ±\sqrt{7}$
$x - 3 = -\sqrt{7}$
$x = -\sqrt{7} + 3$
или
$x - 3 = \sqrt{7}$
$x = \sqrt{7} + 3$
Ответ: $-\sqrt{7} + 3$ и $\sqrt{7} + 3$

$(2x - 3)^2 = 7$
$2x - 3 = ±\sqrt{7}$
$2x - 3 = -\sqrt{7}$
$2x = -\sqrt{7} + 3$
$x = \frac{-\sqrt{7} + 3}{2}$
или
$2x - 3 = \sqrt{7}$
$2x = \sqrt{7} + 3$
$x = \frac{\sqrt{7} + 3}{2}$
Ответ: $\frac{-\sqrt{7} + 3}{2}$ и $\frac{\sqrt{7} + 3}{2}$