Zapisz w postaci sumy algebraicznej
(3y+ z) do potęgi 2
(2a +3b ) do potęgi 2
(3y+z)^2 = 9y^2 + 6yz + z^2
(2a+3b)^2= 4a^2 + 12ab + 9b^2
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(3y+z)^2 = 9y^2 + 6yz + z^2
(2a+3b)^2= 4a^2 + 12ab + 9b^2