plz find it fsttttttttsttttt
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ans. 110
Lets solve it step by step
given a + 1/a = 5 ...(1)
cubing both sides,
(a+1/a)^3 = 125
a^3 + (1/a)^3 + 3× a×1/a (a+1/a) =125
a^3 + (1/a)^3 +3(5) = 125 {from (1)}
a^3 + (1/a)^3 =125-15
a^3+( 1/a)^3 =110
Lets solve it step by step
given a + 1/a = 5 ...(1)
cubing both sides,
(a+1/a)^3 = 125
a^3 + (1/a)^3 + 3× a×1/a (a+1/a) =125
a^3 + (1/a)^3 +3(5) = 125 {from (1)}
a^3 + (1/a)^3 =125-15
a^3+( 1/a)^3 =110
Answered by
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=)(a+1/a)^3 = a^3 +(1/a)^3 + 3a*1/a(a+1/a)
=) 5^3= a^3 + 1/a^3 + 3(5)
=) 125= a^3 + 1 /a^3 +15
=) 125-15= a^3 +1/a^3
=) 110(ans)
=) 5^3= a^3 + 1/a^3 + 3(5)
=) 125= a^3 + 1 /a^3 +15
=) 125-15= a^3 +1/a^3
=) 110(ans)
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