9. If a +1/a= 6, then find the value of a +
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Answer:
a=3+2√ 2 and 3-2√2
Step-by-step explanation:
a +1/a= 6
a^2+1/a=6
a^2+1=6a
a^2-6a+1=0
a=3+2√ 2 and 3-2√2
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