Question

Using property find the valueof the following 24×24-23×23

Answer 1

Let a=24 and b=23
Therefore, 
24*24 - 23*23 
= a^2 - b^2
= (a+b)(a-b)
= (24+23)(24-23)
= 47 * 1
= 47

Answer 2

Using Identity -

a² - b² = (a + b) (a - b)

Let's take,

a = 24

b = 23

Solution -

24 × 24 - 23 × 23

= 24² - 23²

= (24 + 23) (24 - 23)

= 47 × 1

= 47

Hence, the answer is 47