Plis szybko a) 5y× (x+xy-y) =
b) x4 + 3x3 + x2-x- (x3-2x2-x) =
c) 3x2+2x2
d) 2x (3x+4x2) =
e) (3a)2 + 4a2=
b) x4 + 3x3 + x2-x- (x3-2x2-x) =
c) 3x2+2x2
d) 2x (3x+4x2) =
e) (3a)2 + 4a2=
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