[tex] \frac{ {x}^{2} - 49 }{2 {x}^{2} - 15x + 7} = [/tex]
[tex] = \frac{(x - 7)( x + 7)}{2x^{2} - x - 14x + 7 } = [/tex]
[tex] = \frac{(x - 7)(x + 7)}{x(2x - 1) - 7(2x - 1)} = [/tex]
[tex] = \frac{(x - 7)( x + 7)}{(2x - 1)(x - 7)} = [/tex]
[tex] = \frac{x + 7}{2x - 1} [/tex]
