Question

4. Solve the following equation using by quadratic formula
X² + 5X +5 = 0​

Answer 1

$x^2+5x+5=0\\\\a=1\\\\b=5\\\\c=5\\\\D=b^2-4ac\\\\D=25-20\\\\D=5$

x = (-b ± √D) / 2a

x = (-5 ± √5) / 2

$x=\frac{-5+\sqrt{5}}{2} \\\\or\\\\x =\frac{-5-\sqrt{5}}{2}$