Question

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Answer 1

Answer:

6+3+2√18+1=10+6√2

Step-by-step explanation:

Answer 2

Answer:

x=√6+√5

x²=(√6+√5)²

  =using identity=√6²+√5²+2(√6)(√5)

      =6+5+2√30=11+2√30

1/x²=1/11+2√30×11-2√30/11-2√30=11-2√30/ (11)²-(2√30)²=11-2√30/ 121-120

=11-2√30/

121-120=1

=x²+1/x²=11+2√30+11-2√30

=121.................ans

Step-by-step explanation: