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Let a(b - c)x^2 + b(c - a)x + c(a -b) = ...

Let `a(b - c)x^2 + b(c - a)x + c(a -b) = 0` has two equal roots. The true relation is _____

A

1/a + 1/b = 2/c

B

1/a + 1/c = 2/b

C

1/b + 1/c = 2/a

D

N.O.T.

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

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  4. The roots of the equation ax^2 - bx + c = 0 are

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  7. Two roots of 5x^2 + 7x + 3 = 0 are alpha and beta. The value of (alpha...

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  8. Which among the following is a quadratic equation?

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

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

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  12. If p and q are the two roots of the equation x^2 + px + q = 0, then fi...

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  13. Solve for x : x/x+1 + x+1/x = 34/15

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  16. Find two consecutive numbers whose squares have the sum 85

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  19. Solve for Z : 36z^2 - 12cz + (c^2 - d^2) = 0

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  20. If x = sqrt(1 + sqrt(1 + sqrt(1 + ........prop))). Then x is equal to

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