Question

Evaluate using identities: (100+1) (100-1)​

Answer 1

Answer: 9999

Step-by-step explanation:

(100 + 1)(100 - 1)
= 100^2 - 1^2
= 10000 - 1
= 9999

Answer 2

9999

Step-by-step explanation:

Given

(100 + 1)(100 - 1) ← these are the factors of a difference of squares.

a² - b² = (a + b)(a - b) , thus

(100 + 1)(100 - 1)

= 100² - 1

= 10000 - 1

= 9999