Question

please help its it's urgent ​

Answer 1

$\frac{ {x}^{2} }{4} - \frac{ {y}^{2} }{9} \\ \\ = \frac{ {x}^{2} }{ {2}^{2} } - \frac{ {y}^{2} }{ {3}^{2} } \\ \\ = { (\frac{x}{2} )}^{2} - {( \frac{y}{3}) }^{2} \\ \\ = ( \frac{x}{2} - \frac{y}{3} )( \frac{x}{2} + \frac{y}{3} ) \\ \\ \: \: \: \: \: because \: \: \: {a}^{2} - {b}^{2} = (a - b)(a + b)$

so answer is C.

hope it helps..