Question

Find the square of the following without actual multpliation .

43​

Answer 1

It's 1849

I'll explain how I found it without actual multiplication,

`{40}^(2) = 1600 \\ {3}^(2) = 9 \\ 2 * 40 * 3 = 240 \\`

So,

`{43}^(2) = 1600 + 240 + 9 \\ = 1849`

Hope this will help....