A = 5+2√6 find a^2+1/a^2please answer me

1.	A = 5+2√6 find a^2+1/a^2please answer me
Answer» ONG>ANSWER: a=5+2√6, b=1/a=1/(5+2√6) a²+b²=a²+1/a² =(5+2√6)²+1/(5+2√6)² =(25+24+10√2)+1(5-2√6)²/(5+2√6)²(5-2√6)² =(49+10√2)+(5-2√6)²/(5²-2√6²) =(49+10√2)+(25+24-10√2)/(25-24) =(49+10√2)+(49-10√2)/1 =49+10√2+49-10√2 =98 possible answer

Answer» ONG>ANSWER: a=5+2√6, b=1/a=1/(5+2√6)

a²+b²=a²+1/a²

=(5+2√6)²+1/(5+2√6)²

=(25+24+10√2)+1(5-2√6)²/(5+2√6)²(5-2√6)²

=(49+10√2)+(5-2√6)²/(5²-2√6²)

=(49+10√2)+(25+24-10√2)/(25-24)

=(49+10√2)+(49-10√2)/1

=49+10√2+49-10√2

=98

possible answer

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