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Which of the following statements are tr...

Which of the following statements are true?
1. LCM of `10a^(2)b, 15abc, 20a^(2)b^(2)c^(2)` is `20a^(2)b^(2)c^(2)`
2. HCF of `(6x^(2)-7x-3) and (2x^(2)+11x-21)` is `2x-3`.
3. HCF of `(6x^(2)-7x-3) and (2x^(2)+11x-21)` is `2x-3`.

A

1,2,3

B

1,2

C

1,3

D

2,3

Text Solution

Verified by Experts

The correct Answer is:
D
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QUANTUM CAT-ELEMENTS OF ALGEBRA-QUESTION BANK
  1. The factors of (a-b)^3+(b-c)^3+(c-a)^3 are:

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  2. If a+b+c=0 then a^(2)+b^(2)+c^(2) is

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  3. Which of the following statements are true? 1. LCM of 10a^(2)b, 15ab...

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  4. LCM of (2x^2-3x-2)and(x^3-4x^2+4x)

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  5. The G.C.D of 2(x^(2) -y^(2)) and 5(x^(3)-y^(3)) is :

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  6. The GCD of (x^(4)-4x^(2)+3) and (x^(4)-x^(2)-6) is :

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  7. The HCF of (x^(2)-4)(x^(2)-5x-6) and (x^(2)+x-6) is :

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  8. The GCD of [x^(2)-ax-(a+1)] and [ax^(2)-x-(a+1)] is :

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  9. LCM of the polynomials P and Q, where P=(x-2)(x+1)^(2)(x+3)^(2) Q=...

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  10. The LCM of (a^(3)+b^(3)) and (a^(4)-b^(4)) is :

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  11. The HCF of (x^4-1) and (x^3+x^2+x+1) is:

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  12. The GCD of (2x^(2)-4x), (3x^(4)-12x^(2)) and (2x^(5)-2x^(4)-4x^(3)) is...

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  13. The HCF of two expressions P and Q is 1. Their LCM is :

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  14. The LCM of (x+2)^2(x-2) and (x^2-4x-12) is:

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  15. The HCF of a^2-ab-2b^2 and 2a^2-ab-b^2 is :

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  16. HCF and LCM of a^(2)b^(3)c^(4) and a^(5)b^(4)c^(3) are :

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  17. Express each of the following as a rational expression. ((x+3))/((x-...

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  18. Express each of the following as a rational expression. (x+1)/(x-1)+...

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  19. Express each of the following as a rational expressions.(x^2-5x+6)/(x^...

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  20. Express each of the following as a rational expression. Sum of (2x^(...

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