January 2019 1 12 Report
Określ liczbę rozwiązań równania.
a) (x – 6)(x+9) = 0
b) 4x(3x – 7) = 0
c) 5x2 + 6x – 3 = 0
d) 3x2 + x – 2 = 0
e) 2x2 + 6x + 10 = 0
f) 9x2 – 12x + 4 = 0
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