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14. Quadratic Equations
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Q19 of 78 Page 14

Mark the Correct alternative in the following:

The number of roots of the equation is


given

(x+2) (x-5) (x+4) = (x-2) (x-3) (x+6)


x3+4x2-5x2-20x+2x2+8x-10x-40 = x3+6x2-3x2-18x-2x2-12x+6x+36


x2-22x-40 = x2-24x+36


4x = 76


x = 19


hence the given equation has only one solution.

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17

Mark the Correct alternative in the following:

The value of p and q for which p, q are the roots of the equation are


18

Mark the Correct alternative in the following:

The set of all vales of m for which both the roots of the equation are real and negative, is


20

Mark the Correct alternative in the following:

If α and β are the roots of , then the value of is


21

Mark the Correct alternative in the following:

If α, β are the roots of the equation , then are the roots of the equation


Questions · 78
14. Quadratic Equations
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