Q3 of 168 Page 7

Find whether the following quadratic equations have a repeated root :
16y²— 40y + 25 = 0

REPEATED ROOTS MEAN d = 0 .

d = b² – 4ac

d = (–40)² – 4 (16) (25)

d = 1600 – 1600

d = 0

∴ roots are repeated.

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Find whether the following quadratic equations have a repeated root :16y2— 40y + 25 = 0