Question

Answer above ques correctly ​

Answer 1

$\huge \bold \color{red} \mathfrak{required \: answer : }$

$\bold { \underline { \underline{lines : }}}$

$2 {x}^{2} + {a}^{2} y = b \\ cx + {k}^{2} y = 6$

if the lines are parallel then..

$\huge \bold{ \frac{2}{c} = \frac{ {a}^{2} }{ {k}^{2} } = \frac{b}{6} }$

$\huge \bold{\implies \frac{2}{c} = \frac{b}{6} }$

$\huge \bold{\implies \: bc = 12}$

subtract 9 from both sides..

$\bold{\implies \: bc - 9 = 12 - 9} \\ \bold {\implies{bc - 9 = 3}}$

so the value of bc-9 is 3