Question

1) x2 + 5x + 4 = 0
a =
b=
C =
vb2 - 4ac =
-

Answer 1

`\text{Compare}~ x^2 +5x +4=0~ \text{with the standard form of quadratic equation}~ \\\\ax^2 +bx +c =0\\\\a=1\\\\b=5\\\\c=4\\\\√(b^2 -4ac) = √(5^2 -4 \cdot 1 \cdot 4) = √(25 -16) = √(9) =3`