Question 436003
If it's an isosceles right triangle, then the legs are equal, therefore:
x2+x2=(x+3)2
2x2=x2+6x+9
x2-6x-9=0
*[invoke quadratic "x", 1, -6, -9 ]
Throwing out the negative answer, the legs are 7.24264 cm., the hypotenuse is 10.24264 cm..