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Multiple Choice Question (MCQ) If one ro...

Multiple Choice Question (MCQ) If one root of `ax^2 + bx + c =0 be double the other, then `b^2` =

A

9ac

B

9/2ac

C

9/4ac

D

3ac.

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UNITED BOOK HOUSE-Quadratic equation in one variable -Exercise
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  12. Let a(b - c)x^2 + b(c - a)x + c(a -b) = 0 has two equal roots. The tru...

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  17. Which among the following is a quadratic equation?

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  18. The sum of two roots of x^2 - px + q = 0 is thrice of their difference...

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  19. alpha,beta be the roots of x(x -3) =4. Then (alpha^2 + beta^2) equals

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  20. Two roots of x^2 - (a + b)x + ab = 0 (a, b are rational) are

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