Question

Question 1 options:

x2 +x − 4 = 0
You will solve this using the Quadratic Formula.

First, what are the values of a, b, and c?

a =

Answer 1

x = 1.56 or x = -2.56

Explanation:

From the equation;

x2 +x − 4 = 0

a = 1 , b = 1, and c = -4

x = (-b ± √(b² -4ac))/2a

= (-1 ± √(1²- 4×1×-4))/2

= ( -1 ± √(17)/2

= (-1 ± 4.12)/2

= (-1 + 4.12)/2 or (-1 - 4.12)/2

x = 1.56 or x = -2.56