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calculati ex4,5si explicati varog!

Calculati Ex45si Explicati Varog class=

Răspuns :

4) a)x+y/2y
b. =m+2m+2n/2m+2n=3m+2n/2m+2n
c.=9a(3a^2)-a(a^2-1)/9a(a^2-1)=26a^3+a/9a^3-9
d.=(a+2)(a+2)-a^2/a(a+2)=4a+4/a^2+2a