Question

a +1/a=1 হলে a3 + 1 =?
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Answer 1

Answer:

cant understand ......................

Answer 2

Step-by-step explanation:

a +1/a = 1 হলে a³+ 1:= ?

= a³+1

= a³+1³

=(a+1) (a²-a+1)

বা,

= a+1/a = 1

= a²/a,1/a = 1

= a²+1 = a

= a²-a +1 = 0

তাহলে,

= a³+1 = (a+1) (a²-a+1)

= (a+1)×0 = 0