Question

without actual multiplication , find the squares of: ¡¡) 519​

Answer 1

Step-by-step explanation:

519² = (500+19)²

= 500²+19²+2×500×19

= 2500+381+1900

= 4781

Answer 2

Answer:

I don't know answer but I can give you example like :

Step-by-step explanation:

We know that

(a+b)

2

=a

2

+2ab+b

2

94

2

=(90+4)

2

We can write it as

=90

2

+2×90×4+4

2

By further calculation

=8100+720+16

=8836