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,

${40}^{2} = 1600 \\ {3}^{2} = 9 \\ 2 \times 40 \times 3 = 240$

So,

${43}^{2} = 1600 + 240 + 9 \\ = 1849$

Hope this will help....