Question

4.Using suitable identity find: 1.48^ ^ 2 2.103^ * 105​

Answer 1

Step-by-step explanation:

1. 48^2 = (50-2)^2 = 50^2 +2^2 - 2×50×2 = 2500 +4 - 200 = 2504 -200 = 2304 (ans)

2. 103×105 = (104-1)(104+1) = 104×104 +104 - 104 -1= 10816-1 = 10815 (ans)