if (a^2 + 1)/a =4 find the value of a^3 + 2/a^3
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Answer: 52
Step-by-step explanation:
(a^2 + 1)/a =4
a+1/a = 4
(a+1/a)^3= 4^3
a^3+ 1/a^3 + 3(a+1/a) = 64
a^3+ 1/a^3 + 3 × 4 = 64
a^3+ 1/a^3 = 64 -12= 52
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