[tex] \frac{144}{121} {x}^{4} - \frac{49}{16} {y}^{2} = [/tex]
[tex]( \frac{12}{11} {x}^{2} {)}^{2} - \frac{49}{16} {y}^{2} [/tex]
[tex]( \frac{12}{11} {x}^{2} {)}^{2} - ( \frac{7}{4}y {)}^{2} [/tex]
[tex]( \frac{12}{4} {x}^{2} + \frac{7}{4} y)( \frac{12}{4} {x}^{2} + ( \frac{7}{4}y)) [/tex]
Resultado
[tex] \frac{12 {x}^{2} }{11} + \frac{7y}{4})( \frac{12 {x}^{2} }{11} - \frac{7y}{4}) [/tex]
