Question 1102193
l^2+s^2=h^2
h=3*s-2
l=3*s-3
(3*s-3)^2+s^2=(3*s-2)^2
(3s-3)*(3s-3)=9s^2-6s+9
(3s-2)*(3s-2)=9s^2-4s+4
9s^2-6s+9+s^2=9s^2-4s+4
subtract 9s^2 from both sides
add 4s to both sides
subtract 4 from both sides
s^2-2s+5=0
I suspect that you copied something incorrectly
*[invoke quadratic_formula 1, -2, 5, "x"]