Question

I need help simple explanation if possible

Answer 1

x = 7

Explanation:

use pythagoras theorem

x² + ײ = (7.sqrt(2))²

2x² = 49x2

x² = 49

× = 7

Answer 2

In a 45°−45°−90° triangle, the length of the hypotenuse is 2√‾ times the length of a leg. Note that an isosceles right triangle must be a 45°−45°−90° triangle. x2+x2=2x2=(x2‾√)2

i know this isn't an easy explanation but hopefully it might clear something up for you? ill keep looking for things just in case..