Question

if a²+1/a² = 98 then find the value of a³+1/a³
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Answer 1

Answer:

Step-by-step explanation:

a²+1/a² = 98

Or.(a+1/a)²-2.a.1/a=98

Or.(a+1/a)²=100

Or.(a+1/a)=10

a³+1/a³=(a+1/a)³-3.a.1/a(a+1/a)

=(10)³-3.10=1000-30=970