(x+14)²+12²=(16-x)²+12²
(x+14)²=(16-x)²
(x+14)²-(16-x)²=0
[ (x+14)+(16-x)][ (x+14)-(16-x)]=0
(x+14+16-x) (x+14-16+x)=0
30 (2x-2)=0
2x-2=0
2x=2
x=1
(x+14)²+12²=(16-x)²+12²
(x+14)²=(16-x)²
(x+14)²-(16-x)²=0
[ (x+14)+(16-x)][ (x+14)-(16-x)]=0
(x+14+16-x) (x+14-16+x)=0
30 (2x-2)=0
2x-2=0
2x=2
x=1