Question

evalute identity (a+b)(a-b)=a2-b2 55×45​

Answer 1

Explanation:

Take 55as (50+5)and 45 as (50-5) use a ^2-b^2

Answer 2

Answer:

2475

55×45=(50+5)(50-5)

Explanation:

= 50^2-5^2

=2500-25

=2475