Q16 of 78 Page 14

Mark the Correct alternative in the following:

If one root of the equation is 4, while the equation has equal roots, the value of q is


given 4 is the root of x2 + px + 12 = 0

= 16 + 4p + 12 = 0


4p = - 28


P = -7


Given x2 + px + q = 0 has equal roots, then discriminant is 0.


D = b2 – 4ac = 0


p2 – 4q = 0


4q = 49


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