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(a^2 + 1)/a - 5 = 0 ∴ a + 1/a = ______. - Mathematics

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Question

`(a^2 + 1)/a - 5 = 0 ∴ a + 1/a =` ______.

Options

  • 5

  • 25

  • 10

  • 6

MCQ
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Solution

`(a^2 + 1)/a - 5 = 0 ∴ a + 1/a =` 5.

Explanation:

`(a^2 + 1)/a = 5`

`(a^2 + 1)/a = a^2/a + 1/a`

`(a^2 + 1)/a = a + 1/a`

`a + 1/a = 5`

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Chapter 3: Expansions - MULTIPLE CHOICE QUESTIONS [Page 39]

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B Nirmala Shastry Mathematics [English] Class 9 ICSE
Chapter 3 Expansions
MULTIPLE CHOICE QUESTIONS | Q 10. | Page 39
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