1) Without calculating a,b and c evaluate -b/a and c/a if one of the equation
ax^2 +bx + c = 0 is:
2 +i
umm... this question is wrong, u can only do this if a, b and c are real... but we dont know that... i think they ment if they are real.
so if a, b, c, are real
and 2 + i is a root...