if a3+b3=35 and a+b=5 then find the value of 1/a+1/b
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Answered by
17
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Answered by
10
Here is your answer buddy,
Given ,
= 35 ----------(1)
A+B = 5 ----------(2)
Now,
We know that,
= - 3AB(A+B)
=> 35 = - 3AB(5)
=> 35 = 125 - 15AB (since, Cube of 5 = 125 )
=> 35 - 125 = -15AB
=> - 90 = -15AB
=> AB = 6
Now, as per question, we have to find the value of
So,
=>
=>
Hope this helps you.
Be Brainly.
Given ,
= 35 ----------(1)
A+B = 5 ----------(2)
Now,
We know that,
= - 3AB(A+B)
=> 35 = - 3AB(5)
=> 35 = 125 - 15AB (since, Cube of 5 = 125 )
=> 35 - 125 = -15AB
=> - 90 = -15AB
=> AB = 6
Now, as per question, we have to find the value of
So,
=>
=>
Hope this helps you.
Be Brainly.
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