Question

Como descobrir o valor de y? Y= [(3^121)+(3^120)-(3^119)]/[(3^120)+2.(3^119)]

Answer 1

$Y= [(3^{121})+(3^{120})-(3^{119})]/[(3^{120})+2.(3^{119})]\\\\ Y= \frac{(3^{121})+(3^{120})-(3^{119})}{(3^{120})+2.(3^{119})}\\\\ Y= \frac{(3^2.3^{119})+(3.3^{119})-(3^{119})}{(3.3^{119})+2.(3^{119})}\\\\ Y= \frac{9.3^{119}+3.3^{119}-3^{119}}{3.3^{119}+2.3^{119}}\\\\ Y= \frac{11.3^{119}}{5.3^{119}}\\\\ Y=\frac{11}{5}$