Question

Photo attached please help ​

Answer 1

Answer:

A

Step-by-step explanation:

Multiply:

$(\frac{5}{5+\sqrt{10x} } )(\frac{5+\sqrt{10x} }{5+\sqrt{10x} } )$

Simplify:

$\frac{5(5-\sqrt{10x}) }{(5+\sqrt{10x})(5-\sqrt{10x} ) }$

Factor:

$\frac{5(5-\sqrt{10x}) }{25-10x}$

Reduce:

$\frac{5(5-\sqrt{10x}) }{5(5-2x)}$

Solution:

$\frac{5-\sqrt{10x} }{5-2x}$