Odpowiedź:
zad 1
b) (x - 2)² = x² - 4x + 4
c) (3x + 2)² = 9x² + 12x + 4
d) (5x - 1)² = 25x² - 10x + 1
e) (7x - 1/2)² = 49x² - 7x + 1/4
f) (1/3x + 1/6)² = 1/9x² + 1/9x + 1/36
zad 2
a) (x - 1)(x + 1) = x² - 1
b) (x + 5)(x - 5) = x² - 25
c) (3x - 4)(4 + 3x) = (3x - 4)(3x + 4) = 9x² - 16
d) (6 - 1/3x)(1/3x + 6) = (6 - 1/3x)(6 + 1/3x) = 36 - 1/9x²
