Question

Twelve to the second power plus x to the second power equals twenty to the second power

Answer 1

Answer:

it would be 16 :)

Step-by-step explanation:

Answer 2

Answer:

16

Step-by-step explanation:

$12^{2} +x^{2} =20^{2}$

$144+x^{2} =400$

-144          -144

$x^{2} =256$

$\sqrt{x^{2}$=$\sqrt{256}$

x=16