Question

If a=5+2√6 and b=1/a then what will be the value of a2+b2

Answer 1

Answer:

98

Step-by-step explanation:

a=5+2√6

b=1/a=1/5+2√6

b=1/5+2√6*5-2√6/5-2√6

b=5-2√6

a2+b2=(5+2√6)2+(5-2√6)2

=(49+20√6)+(49-20√6)

=49+49

=98