Question

Determine the number of solutions for each quadratic equation
1. x2 - 3x + 4 = 0
2. 2x2 + 4x - 5 = 0
3. x2 + 8x + 16 = 0

Answer 1

1) x'=(3+i√7)/2 & x"=(3-i√7)/2 No real roots.

2) x'=(-2+√14)/2 & x"=(-2-√14)/2


3) x' x" -4