If \[x-\frac{1}{x}=7,\]What is the value of \[{{x}^{2}}+\frac{1}{{{x}^{2}}}?\]

If \[x-\frac{1}{x}=7,\]What is the value of \[{{x}^{2}}+\frac{1}{{{x}^

1.	If \[x-\frac{1}{x}=7,\]What is the value of \[{{x}^{2}}+\frac{1}{{{x}^{2}}}?\]
A.	47
B.	49
C.	51
D.	77
Answer» D. 77

Discussion

No Comment Found

Related MCQs

Direction: Replace the question mark with the correct option in each of the question from. A B F G K L?
There are seven figures, the first and last of which are unmarked and remaining are marked as P, Q, R, S and T. However, the series will be established only if the positions of two of the marked figures are interchanged. Find the figures.
Direction: Choose the number in questions from which does not follow the pattern. 2, 6, 24, 96, 285, 568, 567
Directions: (i) Nine students A, B, C, D, E, F, G, H and I are sitting on a bench and are facing towards (ii) C is next to the right of A and second to the left of H. (iii) B is on any one end and second to the left of E. (iv) G is the neighbour of D and E. Which of the two students are on the two ends?
Directions: (i) Nine students A, B, C, D, E, F, G, H and I are sitting on a bench and are facing towards (ii) C is next to the right of A and second to the left of H. (iii) B is on any one end and second to the left of E. (iv) G is the neighbour of D and E. Which of the following is true?
Direction: Answer the questions referring to the symbol-letter- number sequence given. 2 P J @ 8 $ L B 1 V # Q 6\[\delta \] G W 9 K C D 3 \[{\mathrm O}c\]\[\bullet \]£ 5 F R 7 A Y 4 If P @ L is related to Y75, $ 1 # is related to which of the following?
The area of a square tin plate is \[7056\text{ }c{{m}^{2}}.\] Find the length of its side.
Find the value of \[\sqrt{.0025}\times \sqrt{2.25}\times \sqrt{.0001}.\]
Direction: In each of the following questions, choose the missing letter(s) to form a series. AB, DEF, HUK,?, STUVWX
Direction: In each of the following questions below, a statement is given followed by two conclusions numbered I and II. You have to decide which alternative among the given options follow from the given statement. Statements: Population increase coupled with depleting resources is going to be the scenario of many developing countries in days to come. Conclusions: I. The population of developing countries will not continue to increase in future. II. It will be very difficult for the governments of developing countries to provide its people decent quality of life.

If \[x-\frac{1}{x}=7,\]What is the value of \[{{x}^{2}}+\frac{1}{{{x}^{2}}}?\]

Discussion

No Comment Found

Related MCQs

Reply to Comment