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Square Roots and Cube Roots

Square Roots and Cube Roots Questions

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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 1035

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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1 999

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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2 831

Find the cube root of 287496

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

A) 64

B) 46

C) 56

D) 66

Answer & Explanation Answer: D) 66

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0 625

Find the square root of 1471369.

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

A) 1213

B) 1223

C) 1203

D) 1233

Answer & Explanation Answer: A) 1213

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1 590

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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0 576

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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1 552

The square of 11111 is

A) 1234321	B) 1223311
C) 123454321	D) 321231

A) 1234321

B) 1223311

C) 123454321

D) 321231

Answer & Explanation Answer: C) 123454321

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