Question

What is the quadratic equation of the chessboard? let x be the length

Answer 1

Answer:

Let the length of the side of the chess board be x cm.  

Then, Area of 64 squares =(x−4)  

2

 

∴(x−4)  

2

=64×6.25

⇒x  

2

−8x+16=400

⇒x  

2

−8x−384=0

⇒−24x+16x−384=0

⇒(x−24)(x+16)=0

⇒x=24cm