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The equation whose roots are twice the r...

The equation whose roots are twice the roots of the equation`x ^(2) - 2x + 4 = 0` is

A

`x^2-2x +4 =0`

B

`x^2-2x +16 =0`

C

`x^2-4x +8 =0`

D

`x^2-4x +16 =0`

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The correct Answer is:
D
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OSWAL PUBLICATION-QUADRATIC EQUATIONS-Multiple Choice Question
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  2. If one root of the equation 2x^2 + 3x + c = 0 is 0.5, then what is the...

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  3. The equation whose roots are twice the roots of the equationx ^(2) - 2...

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  4. The difference in the roots of the equation 2x^2 - 11x + 5 = 0 is :

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  5. If alpha and beta are the roots of the equation x^(2) + px + q =0, t...

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  6. In the quadratic equation x^2 + ax + b=0, a and b can take any value f...

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  7. For which value of k does the pair of equation x^2 - y^2 = 0 and (x – ...

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  8. If the root of the equation Ax^2 - Bx + C = 0 are -1 and 1, then which...

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  9. If the roots of the equation (a^2 - bc)x^2 + 2(b^2 - ac)x + (c^2 - ab)...

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  10. If one root of (a ^(2) – 5a + 3) x ^(2) + ( 3a -1) x + 2 =0 is tw...

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  11. If 3 is a root of the equation kx^2 - kx - 3 = 0, then the value of k ...

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  12. If the zeroes of the quadratic polynomial x^(2) +(a+1)x+b are 2 and -3...

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  13. Solve sqrt(2x+9)+x=13.

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  14. The nature of roots of the equation 2x^2 + sqrt(5x) - 1= 0 is ...........

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  15. Solve the equation 2x^2-5x+3=0 by the method of completing square.

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  16. Which of the following is not a quadratic equation?

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  17. Which of the following equations has 2 as a root?

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  18. If 1/2 is a root of the equation x^2 + kr -5/4=0, then the value of k...

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  19. Which one of the following is a quadratic equation?

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  20. Which of the following is a solution of quadratic equation x^2 - b^2 ...

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