Tuesday 7 October 2014

PERFECT SQUARES 2


If 16x2 + 8x + h is a perfect square, find h.

Solution

a = 16, b = 8, c = h.

b2 = 4ac

(8)2 = 4 x 16 x h

64 = 64h

 64  =   64h
 64       64
           
h = 1


Hence h = 1


TRY THIS...............

If 25x2 + 10x + w is a perfect square, find w.



No comments:

Post a Comment