QUADRATICS A2

 

What must be added to x²  + 48x to make the expression a perfect square?

 

Solution

 

a=1, b=48,c=?

 

b² = 4ac

 

(48)² = 4 x 1 x c

 

2304 = 4c

 

2304 = 4c

 4         4

 

576 = c

 

Hence number to be added is 576

 

 

TRY THIS……………………

 

 

What must be added to x²  + 32x to make the expression a perfect square?