Question

Find it.....

( a-3d )² + (a - d)² + (a+ 3d)² + ( a+d)²

Answer 1

Please check the attachment provided above

Answer 2

(a²+9d²-6ad)+(a²+d²-2ad)+(a²+9d²+6ad)+(a²+d²+2ad)

a²+a²+a²+a²+9d²+9d²+d²+d²

4a²+20d²

4(a²+5d²)

I get this one check it please