Odpowiedź:
a) (x-1)2= x2-2x+1
b) (x-3) 2=x2-6x+9
c) (2x-2) 2=4x2-8x+4
d) (4x-7) 2=16x2-56x+49
e) (x-3y) 2=x2-6xy+9y2
f) (3x-y) 2=9x2-6xy+y2
(to pochyłe 2 to potęga)
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Odpowiedź:
a) (x-1)2= x2-2x+1
b) (x-3) 2=x2-6x+9
c) (2x-2) 2=4x2-8x+4
d) (4x-7) 2=16x2-56x+49
e) (x-3y) 2=x2-6xy+9y2
f) (3x-y) 2=9x2-6xy+y2
(to pochyłe 2 to potęga)