Porque una notica no debe ser opinion personal​

porque afectaría la opinión de los lectores.

las noticias deben ser centradas en el suceso, no en la opinión personal de lo sucedido.

the answer would be the third option, "no, ariel should have added 9^2 and 12^2 and compared that to 15^2."

this is found through the pythagorean theorem, which is a^2 + b^2 = c^2.

this is the correct way of solving the problem:

9^2 + 12^2 = 15^2

81 + 144 = 225

225 = 225