Question

plz, solve this equation step-by-step

Answer 1

first, change the denominator using this formula
\[\sqrt{\left( a+b \right) \pm 2\sqrt{ab}} = \sqrt{a} \pm \sqrt{b} , a > b\]

Answer 2

plz show that

Answer 3

@chihiroasleaf

Answer 4

@hartnn plz show how to use above hint

Answer 5

@chihiroasleaf 's hint
a + b = 11
a * b = 18
-> a = 9, b = 2
=> √a ± √b = 3 ± √2
Now plug the result back:
1/ ( 3 + √2 ) + 1/ (3 - √2 )
common denom ....