Question 450555
x2+(x+2)2=(x+4)2
x2+x2+4x+4=x2+8x+16
2x2+4x+4=x2+8x+16
x2-4x-12=0
(x-6)(x+2)=0
x=6 or -2
Throwing out the negative answer, we get the first side to be 6in., the second side to be 8in., and the third side to 10in..