Question

Solve x2 + 4x + 8 = 0.

Answer 1

x equals negative 2 plus or minus 2 I

x equals negative 2 plus or minus 4 I

x equals negative 4 plus or minus 2 I

x equals negative 4 plus or minus 4 I

Answer 2

guess what? quadratic formula again
we better get used to it

Answer 3

Use the formula :O

Answer 4

or actually you can complete the square easy for this one since \(4\) is even
but you still need to know how to use the formula

Answer 5

Whats the formulae again?