zapisz w jak najprostszej sumy algebraicznej.
a. -3(2x-1)(x+6)
b. -(y-1)(2y+4)
c.2a kwadrat - (a+6)(2a-1)
d. 3(x kawdrat-1)-(x-3)(x+2)
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a)-6x+3x+6
b)-2y kwadrat -4y+2y+4
c)4a kwadrat
d)3xkwadrat-3-3x-9+3x=6