Question

Using identity, solve (551² − 449²)​

Answer 1

Answer:

=(551)² - (449)²

= (551+449)(551-449)

= 1000× 102

= 102000

Answer 2

Topic:-

Algebraic expressions

Question:

solve (551² − 449²) Using identity

Solution:

(551² − 449²)

It is in the form of a²-b²

a²-b²=(a+b) (a-b)

So Substitute, (551² − 449²) in a²-b² formula

(a+b) (a-b) = (551+449) × (551-449)

= 1000×102

= 102,000

Formula used : 102,000