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cine imi explica si mie va rog cum se fac?am de facut ex 9 macar 2 exemple multumesc

Cine Imi Explica Si Mie Va Rog Cum Se Facam De Facut Ex 9 Macar 2 Exemple Multumesc class=

Răspuns :

x²-9/x²+5x+6=
x²-9/x²+3x+2x+6=
(x+3)(x-3)/x(x+3)+2(x+3)=
(x+3)(x-3)/(x+3)(x+2)=
x-3/x+2
b) x²-25/x²+11x+30=
x²-25/x²+5x+6x+30=
(x-5)(x+5)/x(x+5)+6(x+5)=
(x-5)(x+5)/(x+6)(x+5)=
x-5/x+6
c) x²+8x+16/x²+7x+12=
(x+4)(x+4)/x(x+4)+3(x+4)=
1/x+3