Friday 27 June 2014

PERFECT SQUARES 1


If 16x2 + 24x + t is a perfect square, find t.

Solution

a = 16, b = 24, c = t.

b2 = 4ac

(-24)2 = 4 x 16 x t

576 = 64t

576 = 64t
 64      64
           
t = 9

Hence t = 9


TRY THIS………………..


If 9x2 + 24x + f is a perfect square, find f.

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