August 2018 3 19 Report
Sprowadź do najprostszej postaci :
a) (a-2b)(2a+b) +3a(b-a)=
b) (2b+a)2 + 2(a-2b)2 - (a + 2b)( a - 2b) + 4ab

)2 - oznacza do kwadratu.

Bardzo proszę o rozwiązanie. ; ))
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