Question

if a = 5+2√6 and b= 1/a,find a+b​

Answer 1

Answer:

The question is not understandable

Answer 2

Answer:

$b = 5 - 2 \sqrt{6}$

Step-by-step explanation:

$a = 5 + 2 \sqrt{6 } \\ b = \binom{1}{a} \\ b = \frac{1}{5 + 2 \sqrt{6} } \\ multiplying \: by \: conjugate \\ b = \frac{5 - 2 \sqrt{6} }{(5 + 2 \sqrt{6})(5 - 2 \sqrt{6} ) } \\ b = \frac{5 - 2 \sqrt{6} }{(5) {}^{2} - (2 \sqrt{6) {}^{2} } } \\ b = \frac{5 - 2 \sqrt{6} }{25 - 24} \\ b = 5 - 2 \sqrt{6}$

a + b = 5 +5 = 10