If a+1÷a=6, then find the value of a³+1÷a³
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Answered by
1
Answer:
=> (a + 1/a)^3 = a3 + 1/a3 + 3.a.1/a(a + 1/a)
=> (6)^3 = a3 + 1/a3 + 3 ( 6 )
=> 216 - 18 = a3 + 1/a3
=> a3 + 1/a3 = 198 Ans.
Step-by-step explanation:
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Answered by
2
Step-by-step explanation:
a³+1/a³=a³+1/a³
a+1/a=6
cubing on both sides
a³+1/a³+3a+3/a=216
a³+1/a³+3(a+1/a)=216
a³+1/a³+3(6)=216
a³+1/a³=216-18
a³+1/a³=198
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