Question

Is 'a' is equal to 3 + 2 root 2 then find the value of 'a' cube + 1 upon 'a' cube

Answer 1

Answer:

>>>>>. 198

Step-by-step explanation:

a= 3+2√2

1/a = 1/3+2√2 × 3-2√2/2-2√2

1/a = 3-2√2 / (3)^2-(2√2)^2

1/a =. 3-2√2 / 9-8

1/a = 3-2√2

( a+1/a). = 3+2√2 +3-2√2

= 6 ........

(a^3+1/a^3) = (a+1/a)^3 - 3(a+1/a)

= (6)^3 - 3(6)

=. 216-18

(a^3+1/a^3) =. 198..

>>>>> hope it's helpful