Question

Can you tell me the answer and give me full explanation?

Answer 1

Answer:

$\frac{7}{ \sqrt{5} - \sqrt{2} }$

$\frac{7 }{ \sqrt{5} - \sqrt{2} } \times \frac{ \sqrt{5} + \sqrt{2} }{ \sqrt{5} + \sqrt{2} }$

$\frac{7( \sqrt{5} + \sqrt{2} )}{( \sqrt{5} - \sqrt{2} )( \sqrt{5} + \sqrt{2}) }$

$\frac{7( \sqrt{5} + \sqrt{2} )}{( \sqrt{5}) {}^{2} - (\sqrt{2} ) {}^{2} }$

$\frac{7( \sqrt{5} + \sqrt{2} ) }{3}$

$formula \: used \: in \: denominator \: is$

$(x + y)(x - y) = x { }^{2} - y {}^{2}$

Answer 2

Answer:

answer = (7√5+7√2)/3

If I am correct then please reply me.