Question

Using Identities, Evaluate the following: 1. 512 - 492 2. 103 X 104

Answer 1

Answer:

identity can't be used are you sure your question is correct?

Answer 2

Answer:

2.10712

Step-by-step explanation:

2. 103×104

(100+3)(100+4)

using identity (x+a)(x+b)= x^2+(a+b)x+ab

(100)^2+(3+4)100+4×3

10000+700+12

10712