1. Wykonaj działania.
a. ( 4x-5 ) do kwadratu + (5+4x) do kwadratu
b. ( 2x-1 ) do kwadratu -4 ( x-3 ) ( x+3)
c. ( x+2y ) do kwadratu - ( x+2y ) ( x-2y ) +2 ( x-2y ) do kwadratu +4xy
d. ( a-2b ) ( 3a+b ) -3 ( a-b ) do kwadratu
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a).
b).
c).
d).
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