If a=3+2 under root 3,then find the value of a^2 + 1/9^2 and a^3+1/a^3
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Step-by-step explanation:
a^2 +1/9^2
=(3+2)⅓²+1/81
=(25)⅓ +1/81
=8.33.... +0.012
=8.345....
a^3 +1/a^3
=(3+2)⅓³ + 1/(3+2)⅓³
=5 + 1/5
=5 + 0.2
=5.2
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