If a4 +(1/a4)=119 then a power 3-(1/a3)
Choose the correct choice from the following answers:
A) 22	B) 36	C) 27	D) 18	E) 19
Explanation:   Given that a4+1a4=119a4+1a4=119 , adding 2 on both sides, we get : (a2+1a2)2=121(a2+1a2)2=121   ⇒a2+1a2=11⇒a2+1a2=11   Again, by subtracting 2 on both sides, we have, ⇒(a−1a)2=9⇒(a−1a)2=9   ⇒a−1a=3⇒a−1a=3   Now, ⇒a3−1a3⇒a3−1a3 = (a−1a)(a2+1a2+1)(a−1a)(a2+1a2+1) = 12×3 = 36   Answer:36
<result>B</result>
If a4 +(1/a4)=119 then a power 3-(1/a3)