January 2019 1 20 Report
Wyznacz iloczyn, korzystając ze wzorów skróconego mnożenia.
a) (1+2x)(1-2x)
b) (3x-7)(7+3x)
c) (4x+3)(3-4x)
d) (x+6)²
e) (2x-1)²
f) (5x+3)²
g) (x²+2)²
h) (3x²-1)²
i) (x-2x²)²
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