Question

a³+3a²+9a =1. Then find the value of a³ + (3/a)

Answer 1

Answer:

28

Step-by-step explanation:

a³+3a²+9a =1  ----(1)

a³= 1 - 3a²- 9a

Now, Multiply eqn 1 by 3

=> 3a³ + 9 a² + 27a = 3

Now divide by a:

3/a = 3a² + 9a + 27 ----(2)

Now, Add 1 and 2

a³ + 3/a = 1 - 3a²- 9a +3a² + 9a + 27

              => 28

Answer 2

Answer:

28 is answer

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