Evaluate the product 104×96 without multiplying directly
Multiplication:
Given expression can be written as
104×96=(100+4)×(100–4)
Using identity
(a+b)(a–b)=a2–b2
Here
a=100,b=4
⇒(100+4)×(100–4)=(100)2–(4)2=10000–16=9984
Hence the product is 9984
Evaluate the following products without multiplying directly:
(i) 103 × 107 (ii) 95 × 96 (iii) 104 × 96