Odpowiedź:
a)
y = - 1/2x + 1
0 = -1/2x + 1
-1 = -1/2x | *(-2)
x = 2
b)
y = x² - 2
0 = x² - 2
2 = x² | √
x = √2 v x = √-2
c)
y = (2x + 7) : 5 | *5
0 = 2x + 7
-7 = 2x | :2
x = -3,5\
d)
0 = √(x - 2) | ^2
0 = x - 2
x = 2
e)
0 = 1/4x - 2/3
-2/3 = 1/4x | *4
x = -8/3
f)
0 = (-3x + 1) : 3 | *3
0 = -3x + 1
-1 = -3x | :(-3)
x = 1/3
