August 2018 2 15 Report
Sprawdż, czy poprawnie zamieniono iloczyn na sumę algebraiczną.
a) (x+y) (z+y)= xz+xy +yz +2y
b) (x+2) (x-4)= x2 + 6x - 8
c) (m-1) (m-3)= m2 - 4m + 3
d) (a - 1/2) (2b+6)= 2ab + 6a +b+ 3
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