Wednesday, 30 July 2025

PERFECT SQUARES J1

 

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

 

Solution

 

a = 16, b = -8, c = e.

 

b2 = 4ac

 

(-8)2 = 4 x 16 x e

 

64 = 64e

 

64 = 64e

64     64

           

e = 1

 

Hence e = 1

 

 

TRY THIS………………………

 

 

If 49x2 – 28x + n is a perfect square, find n

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