if a+1/a=5 then find the value of a3+1/a3.
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Answered by
1
Answer:
a+1/a= 5
cubing both the sides
(a+1/a )^3=(5)^3
a³+1/a³ =25
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Answered by
1
Answer:
a+1/a=5
Cubing both sides,
(a+1/a)³=5³
(a) ³+(1/a) ³+3×a×1/a(a+1/a)=125
a³+1/a³+3×5=125
a³+1/a³+15=125
a³+1/a³=125-15
a³+1/a³=115
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