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Square Roots and Cube Roots

Square Roots and Cube Roots Questions

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Determine the value of 'x' when $\sqrt[3]{3^{x}} = 27$

A) 1	B) 3
C) 9	D) 12

A) 1

B) 3

C) 9

D) 12

Answer & Explanation Answer: C) 9

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2 1211

If a is positive and $a^{2} + \frac{1}{a^{2}} = 7, then a^{3} + \frac{1}{a^{3}} = ?$

A) 9	B) 27
C) 18	D) 0

A) 9

B) 27

C) 18

D) 0

Answer & Explanation Answer: C) 18

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6 1203

Which of the numbers given below is the square root of 15376?

A) 122	B) 124
C) 134	D) 128

A) 122

B) 124

C) 134

D) 128

Answer & Explanation Answer: B) 124

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2 1164

Determine the value of $(\frac{1}{r} + \frac{1}{s})$ when $r^{3} + s^{3} = 0 and r + s = 6$ ?

A) 0	B) 0.5
C) 1	D) 2

A) 0

B) 0.5

C) 1

D) 2

Answer & Explanation Answer: B) 0.5

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1 1160

Which of the following equations has 3 as a root?

A) x2 - 7x + 12 = 0	B) x2 - 5x + 12 = 0
C) x2 + 3x + 12 = 0	D) x2 + 3x - 12 = 0

A) x2 - 7x + 12 = 0

B) x2 - 5x + 12 = 0

C) x2 + 3x + 12 = 0

D) x2 + 3x - 12 = 0

Answer & Explanation Answer: A) x2 - 7x + 12 = 0

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2 984

The value of √0.0144 is

A) 0.12	B) 0.012
C) 1.2	D) 0.0012

A) 0.12

B) 0.012

C) 1.2

D) 0.0012

Answer & Explanation Answer: A) 0.12

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0 819

The square root of 3249 is

A) 63	B) 59
C) 57	D) 67

A) 63

B) 59

C) 57

D) 67

Answer & Explanation Answer: C) 57

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1 781

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

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

A) 8

B) 4

C) 3

D) 6

Answer & Explanation Answer: D) 6

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