Question

X2 +x − 4 = 0

You will solve this using the Quadratic Formula. First, what are the values of a, b, and c?

Answer 1

• a=1
• b=1
• c=-4
• x = (-1 ±√17)/2

Explanation:

The coefficient of x^2 is "a". That is 1.

The coefficient of x is "b". That is 1.

The constant term is "c". That is -4.

The values of a, b, and c are 1, 1, and -4, respectively.

_____

The solution is ...

x = (-b ±√(b^2-4ac))/(2a)

Filling in the values of a, b, and c, this is ...

x = (-1 ±√(1^2 -4·1·(-4)))/(2·1)

x = (-1 ±√17)/2