Question 1(v) Use a suitable identity to get each of the following products: (1.1m – 0.4 ) (1.1m + 0.4 )
(1.1m–0.4)(1.1m+0.4) =(1.1m)2−(0.4)2 (Using the identity (a−b)(a+b)=a2−b2] =1.21m2−0.16
Use a suitable identity to get each of the following products.
(i) (x + 3) (x + 3) (ii) (2y + 5) (2y + 5)
(iii) (2a − 7) (2a − 7) (iv)
(v) (1.1m − 0.4) (1.1 m + 0.4) (vi) (a2 + b2) (− a2 + b2)
(vii) (6x − 7) (6x + 7) (viii) (− a + c) (− a + c)
(ix) (x) (7a − 9b) (7a − 9b)