How do you solve #2x^2 + x - 1 = 0 # using the quadratic formula?
Standard Quadratic Equation :
a is the constant with x to the power 2.
b is the constant with x to the power 1.
c is the constant.
Standard Quadratic Formula:
In this Case:
a = 2
b = 1
c = -1
put these values in the quadratic formula.