Question

Find Square of : $46$

Answer 1

Square of 46

${46}^2=(50-4{)}^2$

we know $a^2+b^2-2\times a\times b$

$\Rightarrow {(50-4)}^2={50}^2+4^2-2\times 50\times 4\Rightarrow 2500+16-400=2116$