Question
If for non-zero x, x² - 4x - 1 = 0, what is the value
of x² + 1/x²?Solution
Given, x² - 4x - 1 = 0 ⇒ x - 4 - 1/x = 0 [Dividing both sides by x] ⇒ x - 1/x = 4 ⇒ (x - 1/x)² = 4² [Squaring on both sides] ⇒ x² + 1/x² - 2 = 16 ⇒ x² + 1/x² = 18
Who wrote the book titled "Made in India: 75 Years of Business and Enterprise"?
Find the smallest number of five digits which when divided by 15, 30, 38, 40 respectively always leaves 2 as remainder.
Which accounting principle states that companies and owners should be treated as separate entities.
Read the following statements carefully-
(i) In the late 19 century, the Desh Hiteshini Sabha was established in Mewar.
(ii) Social refo...
Income of A is twice the income of B. B and A spend 40% and 50% respectively of their incomes. Find the savings of A, if B saves Rs. 60000 in a month.
In which year was the second National Labour Commission constituted under the chairmanship of "Ravindra Varma"?
Consider the following statements regarding Tribunals:
1. The provisions regarding the Tribunals were inserted to the Constitution as per the 4...
Consider the following statements concerning United Arab Emirates:
1. Oman is one of the seven Emirates which form the United Arab Emirates.
The 'Energy Transition Index' is released by
Which of the following statement is/are incorrect about “Sukanya Samriddhi Yojana”?
I. Sukanya Samriddhi Account can be ope...
Relevant for Exams:
