Math, asked by dvdhdjdjbxbxbxd, 3 months ago

If a²- 7a-1 = 0,
Find the value of a²+1/a²

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Answered by sd70025

2

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Answered by ThunderGod1

0

a² - 7a - 1 = 0 (Given)

a²/a - 7a/a - 1/a = 0 (Dividing every number by a)

a - 7 - 1/a = 0

a - 1/a = 7 ------ (i)

(a-1/a)² = a² + 1/a² - 2

(7)² = a² + 1/a² - 2

a² + 1/a² = 49 +2

= 51 Ans

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