If a+b=4and1/a+1/b=4,. a³+b³=?
Answers
Answer:
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Step-by-step explanation:
(A+B)³=A³+B³+3AB(A+B) A³+B³=(A+B)³-3AB(A+B) GIVEN,
A+B=4
1/A+1/B=4
A+B =4 AB
4 =4 AB
AB=1
A³+B³= (4)³-3(1)(4)
=>64-12
=>52
THEREFORE THE VALUE OF A³+B³= 52