Răspuns :

Răspuns:

a)2/x +2+1/x +3=

2/x+2+1/x+3x/x=

(2+2+1+3x)/x=

(5+3x)/x

b)x+2/x+3×x+3/x+4=

(x+2)(x+4)/(x+3)(x+4) × (x+3)(x+3)/(x+3)(x+4)=

(x+2)(x+4)(x+3)^2/(x+3)(x+4)=

(x+2)(x+3)

c)x-3/x-4:x-3/x-5=

x-3/x-4 × x-5/x-3=

x-5/x-4

Explicație pas cu pas:

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