Question

Find the value of 407×393 by suitable identity

Answer 1

(400+7)(400-7)
(400)^2-(7)^2
160000-49
159951

Answer 2

Heya Friend ☺

Here's your answer

We gonna split these two terms to use identity a²-b²
${(400 + 7)}^{2} \times {(400 - 7)}^{2} \\ {400}^{2} - {7}^{2} \\ 160000 - 49 \\ 159951$
Hope it helps you ☺