April 2019 0 51 Report
Zapisz w postaci sumy algebraicznej. (Wzór skróconego mnożenia)
(1/2z + \sqrt{3}) ^2

I ten tak na sprawdzenie, bo mam, ale nie wiem czy dobrze:
(-5k+4m)^2=(-5k+4m)(-5k+4m)=25k^2-20km-20km+16m^2=25k^2+40km+16m^2

***
^2 = do potęgi 2
Daje naj.
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