Tuesday 17 December 2013

QUADRATIC A3

If 16x2 + nx + 9 is a perfect square, find m

Solution

a = 16, b = n, c = 9.

b2 = 4ac

(n)2 = 4 x 16 x 9

n2 = 576  (Find the square root of 576)

n = 24 


Hence n = 24

No comments:

Post a Comment