(25+8)^2-(8^2+25^2)=_

Please help! Thanks, no spam, ty!

solve it without using a calculator if best, I think there is a trick to solving this but I don’t know.

Please help! Thanks, no spam, ty!

solve it without using a calculator if best, I think there is a trick to solving this but I don’t know.

(25+8)^2-(8^2+25^2)

(33)^2-(64+625)

1089-689

400

400