Question

Please solve this doubt​

Answer 1

$( \frac{x}{5} - \frac{y}{6} ) ^{2}$

Using,

$(a - b) ^{2} = {a}^{2} + {b}^{2} - 2ab$

We get,

$= { (\frac{x}{5}) }^{2} + { (\frac{y}{6} )}^{2} - 2( \frac{x}{5} )( \frac{y}{6} ) \\ = \frac{ {x}^{2} }{25} + \frac{ {y}^{2} }{36} - \frac{xy}{15}$

Answer 2

$\frac{ {x}^{2} }{25} - \frac{xy}{15} + \frac{ {y}^{2} }{36}$

Step-by-step explanation:

${( \frac{x}{5} - \frac{y}{6}) }^{2}$

${( \frac{x}{5} )}^{2} - 2 \frac{x}{5} \frac{y}{6} + {( \frac{y}{6}) }^{2}$

x^2/25 - xy/15 + y^2 /36