Question
If x - 1/x = 9, then the value of x² + 1/ x² is:
Solution
(x - 1/x) = 9 Squaring both the sides we get, (x2Â - 1/x2) = 81 + 2 (x2Â - 1/x2) = 83
More Simplification Questions
- 242 + 18 × 8 – ? = 356
- What will come in the place of question mark (?) in the given expression? (√441 + √729) X 8 = ? + 518 ÷ 2
- What will come in place of (?) in the given expression. (1/4 + 1/2) of 240 = ?
- Question 4
- Find the value of the given expression. [76 – {90 ÷ 5 × (24 – 36 ÷ 3) ÷ 3}]
- 30% of 600 – = ? 3
- What will come in the place of question mark (?) in the given expression? 18 × (24 ÷ 6) + (5/9 of 243) − 19 = ?
- Question 8
- `(sqrt(1296)xx42)/(120+200)` = ?
- I. 8x² - 74x + 165 = 0 II. 15y² - 38y + 24 = 0
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