Monday 6 October 2014

PERFECT SQUARES 1

If 4x2 + 12x + t is a perfect square, find t.

Solution

a = 4, b = 12, c = t.

b2 = 4ac

(12)2 = 4 x 4 x t

144 = 16t

144 = 16t
 16      16
             
t = 9

Hence t = 9

TRY THIS……..


If 16x2 + mx + 1 is a perfect square, find m.


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