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(x+1) la patrat -5x=2(x-3) la patrat -(x+2) la patrat

Răspuns :

Dutache
[tex] (x+1)^{2}-5x=2 (x-3)^{2}- (x+2)^{2}= x^{2}+2x+1-5x=[/tex]=3x patrat -12x +18-xpatrat-4x-4=
xpatrat-3x+1=2x patrat -16x+14->-x patrat+13x=14-1->-x patrat+13x=13->x(x+13)=13->x=[tex] \frac{13}{x+13} [/tex]

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