solve this question of maths class 9
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Step-by-step explanation:
1/a = 1/2+root3 = 2-root3/4-3 = 2-root3
a³+1/a³ = (a+1/a)³-3(a+1/a)
= (4)³ - 3(4)
= 64 - 12 = 52
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