Question

pls give the correct answer​

Answer 1

Given

• $\sf \: x = \dfrac{1}{4} \: \: \: \: y = \dfrac{8}{7}$

To Find

• $\sf \bigg[7 {\bigg( \frac{xy - y}{x} \bigg)}^{2} \bigg ]$

Solution

$\: \: \: \: \: \mapsto \: \sf \bigg[7 {\bigg( \frac{xy - y}{x} \bigg)}^{2} \bigg ]$

• Putting the value of x and y

${\: \: \: \: \: \mapsto \: \sf \bigg[7 {\bigg( \frac{ \big(\frac{1}{4} \times \frac{8}{7} \big) - \frac{8}{7} }{ \frac{1}{4} } \bigg)}^{2} \bigg ]}$

${\: \: \: \: \: \mapsto \: \sf \bigg[7 {\bigg( \frac{ \big(\frac{1}{ \cancel{4}} \times \frac{\cancel8^{2} }{7} \big) - \frac{ 8}{7} }{ \frac{1}{4} } \bigg)}^{2} \bigg ]}$

${\: \: \: \: \: \mapsto \: {\sf \bigg[7 {\bigg( \frac{ \frac{2}{7} - \frac{ 8}{7} }{ \frac{1}{4} } \bigg)}^{2} \bigg ]}}$

${\: \: \: \: \: \mapsto \: {\sf \bigg[7 {\bigg( \frac{ \frac{2 - 8}{7} }{ \frac{1}{4} } \bigg)}^{2} \bigg ]}}$

${\: \: \: \: \: \mapsto \: {\sf \bigg[7 {\bigg( \dfrac{ - 6}{7} \times \dfrac{4}{1} \bigg)}^{2} \bigg ]}}$

${\: \: \: \: \: \mapsto \: {\sf \bigg[7 \times \dfrac{ - 24}{7} \bigg ]^{ 2} }}$

${\: \: \: \: \: \mapsto \: {\sf - 24 ^{2} }}$

${\: \: \: \: \: \: \mapsto \: {\sf 576 }}$

Hance

$\sf{if \sf \: x = \dfrac{1}{4} \: or \: y = \dfrac{8}{7} , then \sf \bigg[7 {\bigg( \frac{xy - y}{x} \bigg)}^{2} \bigg ] ~~~ Equals~ to \: \: \: \bf 576}$

Answer 2

Answer:

In attachment I have answered this question.↑