Odpowiedź:
a)
(2x - 1)² = 0
2x - 1 = 0
2x = 1 /:2
x = 1/2
b)
(b + 2)³ = 1
b + 2 = 1
b = 1 - 2 = -1
c)
(1 - x)³ = -1
1 - x = -1
-x = -1 - 1 /*(-1)
x = 2
d)
5x(x + 5) = 0
5x = 0 lub x + 5 = 0
x = 0 lub x = -5
e)
(x - 1)(x + 2) = 0
x - 1 = 0 lub x + 2 = 0
x = 1 lub x = -2
f)
(4 - x)(2 + x) = 0
4 - x = 0 lub 2 + x = 0
x = 4 lub x = -2
Szczegółowe wyjaśnienie:
