April 2019 0 22 Report
Iloczyn (7x-2y)(7x+2y) jest równy :
A) 49x do potęgi 2 +4y do potęgi 2
B) 49x do tego 2 -4y do potęgi 2
C) 49x do potęgi 2 -2y
D) 49x do potęgi 2 -28xy -4y do potęgi 2
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