If x+1x=-2, then the value of x7+1x | Square Roots and Cube Roots Questions & Answers

Q:

Find the square root of 1471369.

A) 1213	B) 1223
C) 1203	D) 1233

Answer & Explanation Answer: A) 1213

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2 17312

Q:

Find the cube root of 287496

A) 64	B) 46
C) 56	D) 66

Answer & Explanation Answer: D) 66

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1 1247

Q:

Which of the following relation is CORRECT?

I. (√15 + √7) < (2√22)

II. (√17 + √5) < (√20 + √2)

A) Only I	B) Only II
C) Neither I nor II	D) Both I and II

Answer & Explanation Answer: A) Only I

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0 1716

Q:

The square root of 5184 is

A) 76	B) 74
C) 72	D) 82

Answer & Explanation Answer: C) 72

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1 569

Q:

How many of the factors of 256 are perfect squares?

A) 6	B) 4
C) 3	D) 5

Answer & Explanation Answer: D) 5

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1 604

Q:

What is the square root of (√5 + 2)/(√5 – 2)?

A) √5 – √4	B) √5 + 2
C) 5 + √2	D) 7

Answer & Explanation Answer: B) √5 + 2

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1 1719

Q:

What is the square root of 6561?

A) 79	B) 89
C) 77	D) 81

Answer & Explanation Answer: D) 81

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3 634

Q:

The least number to be added to 435 to make it a perfect square is

A) 8	B) 4
C) 3	D) 6

A) 1	B) -1
C) 0	D) -2

If $x + \frac{1}{x} = - 2,$ then the value of $x^{7} + \frac{1}{x^{7}}$

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If x+1x=-2, then the value of x7+1x7

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If $x + \frac{1}{x} = - 2,$ then the value of $x^{7} + \frac{1}{x^{7}}$