Find each of the following products:
(i) (x – 4)(x – 4)
(ii) (2x – 3y)(2x – 3y)
(iii) 
(iv) 
(v) 
(vi) 
(i) Given,
(x – 4)(x – 4)
By using the formula (a – b)2 = a2 – 2ab + b2
We get;
= (x – 4)2
= (x)2 – 2 × (x) × 4 + (4)2
= x2 – 8x + 16
(ii) Given,
(2x – 3y)(2x – 3y)
By using the formula (a – b)2 = a2 – 2ab + b2
We get;
= (2x – 3y)2
= (2x)2 – 2 × (2x) × (3y) + (3y)2
= 4x2 – 12xy + 9y2
(iii) 
By using the formula (a – b)2 = a2 – 2ab + b2
We get;
(iv) 
By using the formula (a – b)2 = a2 – 2ab + b2
We get;
(v) 
By using the formula (a – b)2 = a2 – 2ab + b2
We get;
(vi) 
By using the formula (a – b)2 = a2 – 2ab + b2
We get;
2