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Mlgproer9001
a fost răspuns

a)x(x+1)+3(x-1)=
b)4(x+1)+3(x+2y)=
c)5a-3(a-2)-5(-2a=1)=
d)5ab-4b(2a-5)-3a(3b+4)=

Răspuns :

Mikkka
a)  x²+x+3x-3=x²+4x-3
b)  4x+4+3x+6y=7x+6y+4
c)  5a-3a+6+10a-5=12a+1
d)  5ab-8ab+20b-9ab-12a=-12ab-12a+20b

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