Q3 of 168 Page 7

Find whether the following quadratic equations have a repeated root :

9x2— 12x + 4 = 0

REPEATED ROOTS MEAN d = 0.


d = b2 – 4ac


d = (–12)2 – 4(9)(4)


d = 144 – 144


d = 0


Yes, roots are repeated.


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