zredukuj wyrazy podobne
a)-4x-7-3x+7
b)x-2xy+1/2x-1/3xy
c)-x do kwadratu+y do kwadratu-2x do kwadratu-2y do kwadratu
d)-x do kwadratu +2x -3x+x do kwadratu
e)4x+4-7 do kwadratu -1/2
f)-2ab+12a-4ab-16a
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a) x-1
b)1i1/2x-0,25xy
c)-3x do kwadratu +y do kwadratu
d)-2x do kwadratu +x
e)4x+3,5-49
f)-6ab-4a
ale nie wiem bo dawno nie mialam ... wiec sory jak cos