September 2018 2 47 Report

Rozwiąż równania nie obliczając delty :

a) 16x² - 25 = 0

b) 6x² = -2x

c) x²- 6x + 9 = 0

d) (7x - 3)² = 81

e) 1 - 9x² = 0

f) x = -5x²

g) 4x² = 12x - 9

h) (2x - 5)² = 36


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