Dorpowaź do jak najprostszej postaci
2a do potegi2 + (a+2) do potęgi 2 - (a-1) ( a+1)
2a^2+(a+2)^2-(a-1)*( a+1)
2a^2+a^2+4a+4-a^2-a+a+1
2a^2+4a+5
2a²+(a+2)²-(a-1)(a+1) = 2a²+a²+4a+4-(a²+a-a-1) = 2a²+a²+4a+4-a²-a+a+1 =
2a²+4a+5
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2a^2+(a+2)^2-(a-1)*( a+1)
2a^2+a^2+4a+4-a^2-a+a+1
2a^2+4a+5
2a²+(a+2)²-(a-1)(a+1) = 2a²+a²+4a+4-(a²+a-a-1) = 2a²+a²+4a+4-a²-a+a+1 =
2a²+4a+5