4. If x1, x2 are two real number roots of real number coefficient quadratic equation:
$$x^2 -2mx + m + 2 =0$$
Solve the following questions:
(1) What are the values of m so that x1=x2?
(2) What are the value(s) so that $$(x1)^2 + (x2)^2 $$
has minimum value? What is the minimum?
The Attempt at a Solution
I substituted x1 into the quadratic for x and then substituted x2 into the quadratic for x and set them = to each other. I then solved for m and got
m= (x1 + x2)/2
I'm not sure what the 2nd question means. Can anyone help?