Przekształć iloczyny na sumy. :
a) 3(a-2)
b)-4(x+y)
c)-5(-x+1)
d)-3a(jedna trzecia-a)
e)(t-2s-1) razy 7
f)jedna druga(2a-4b+1)
g) m(2m+3)
h)3p(2r+5p-1)
i)xy(2x-3y+5)
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a) 3(a-2)=3a-6
b)-4(x+y)=-4x-4y
c)-5(-x+1)=5x-5
d)-3a(1/3-a)=-a+3a^2
e)(t-2s-1) * 7=7t-14s-7
f)0,5(2a-4b+1)=a-2b+0,5
g) m(2m+3)=2m^2+3m
h)3p(2r+5p-1)=6pr+15p^2-3p
i)xy(2x-3y+5)=2x^2y-3xy^2+5xy
a) 3(a-2)=3a-6
b)-4(x+y)=-4x-4y
c)-5(-x+1)=5x-5
d)-3a(1/3-a)=-a+3a^2
e)(t-2s-1) * 7=7t-14s-7
f)0,5(2a-4b+1)=a-2b+0,5
g) m(2m+3)=2m^2+3m
h)3p(2r+5p-1)=6pr+15p^2-3p
i)xy(2x-3y+5)=2x^2y-3xy^2+5xy