Algebra MCQ Set 1

ALGEBRA MCQ SET 1

1. If a + 1/a = 12 , then find the value of a² + 1/a² .

(a) 144

(b) 146

(c) 142

(d) 140

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Answer: C

2. If x + 1/x = 7 , find the value of x³ + 1/x³ .

(a) 343

(b) 332

(c) 340

(d) 322

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Answer: D

3. If x + 1/x = 7 , then the value of x^6 + 1/x^6 is :

(a) 113682

(b) 103682

(c) 103882

(d) 103872

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Answer: B

4. If a + 1/a = 7 , then a^5 + 1/a^5 is equal to :

(a) 15127

(b) 13127

(c) 14527

(d) 11512

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Answer: A

5. If x+1/x = 3 , x ≠ 0 , then the value of x^7 + 1/x^7 is :-

(a) 749

(b) 843

(c) 746

(d) 849

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Answer: B

6. If p – 1/p = 6 , then what is the value of p^4 + 1/p^4 ?

(a) 1562

(b) 1432

(c) 1442

(d) 1444

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Answer: C

7. If x – 1/x = 1 , then what is the value of x + 1/x ?

(a) 3

(b) 119

(c) 47

(d) -1

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 Answer: C

8. If 16x^4 + 1/16x^4 = 14159 , then find the value of 2x + 1/2x .

(a) 9

(b) 11

(c) 12

(d) 15

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Answer: B

9. If x > 0 , and x + 1/x = 2207 , what is the value of x + 1/x ?

(a) 710649

(b) 710647

(c) 710654

(d) 710661

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Answer: B

10. If a-1/a = 4 , then the value of a + 1/a is :

(a) 5√5

(b) 4√5

(c) 2√5

(d) 3√5

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Answer: C