if a=3+2√2 ,find the value of a² + 1/a²
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a² 15 1/a² 1/15
15+1/15
225+1/15
226/15
15+1/15
225+1/15
226/15
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a= 3+2√2
a^2= 9+8+12√2 = 17+12√2
1/a^2= 17-12√2
hence answer is 17+17= 34
a^2= 9+8+12√2 = 17+12√2
1/a^2= 17-12√2
hence answer is 17+17= 34
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