Question

solve it with short trick​

Answer 1

Answer:4

Step-by-step explanation:

we know, (a+b)^2 - (a-b)^2 = 4ab

Hence,

{ ( 947 + 396 ) ^ 2 + -( 947 - 396 ) ^ 2 } / 947 x 396

={4 x 947 x 396} / 947 x 396

=4

Answer 2

I hope you will find it helpful