Question

using a^2- b^2=(a-b) (a+b) find 551^2-449^2​

Answer 1

Answer:

102000

step by step explanation:

a^2-b^2=(a+b)(a-b)

551^2-449^2=(551-449)(551+449)

3,03,601-201601=(102)(1000)

1,02,000=1,02,000

LHS=RHS

Hence proved