Math, asked by maymoonamalik125, 10 months ago

if a+1/a=√3 then find a6-1/a6+2

Answers

Answered by omkhengle4
1

Step-by-step explanation:

Given equation is,

a + 1/a = √3 .............................(i)

On squaring both sides

⇒ a2 + 1/a2 + 2 = 3

⇒ a2 + 1/a2 = 1 ..............................(ii)

Now, multiplying Equation (i) and (ii), we get

(a + 1/a) (a2 + 1/a2) = √3

⇒ a3 + a/a2 + a2/a + 1/a3 = √3

⇒ a3 + 1/a3 + ( a + 1/a ) = √3

now put the value of a + 1/a in above equation,

⇒ a3 + 1/a3 + √3 = √3 [from Eq. (i)]

⇒ a3 + 1/a3 = 0

⇒ ( a6 + 1 ) /a3 = 0

⇒ a6 + 1 = 0 x a3

⇒ a6 + 1 = 0

⇒ a6 = -1

∴ a6 - 1/a6 + 2

put the value of a6

= (-1)6 - 1/(-1)6 + 2

= 1 - 1 + 2 = 2

Answered by paromita1976ghosh
3

Step-by-step explanation:

Hope it help u,

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