The equation that best set up the quadratic formula is
（-2）|+-|V（-2）2-4（1）（4）
t=
2(1)
Hence, option A is the correct answer.
What is a Quadratic Equation?
Quadratic equation is simply an algebraic expression of the second degree in x. Quadratic equation in its standard form is;
ax? + bx+c=0 Where x is the unknown
Using the quadratic formula x= (-b+V(b°- 4ac)) / (2a)
Given that;
x° + 1 = 2x -3
First we re-arrange the the equation.
x= + 1 = 2x -3
x- 2x +1+3=0
x- 2x+ 4=0
Hence;
• a =1
• b= -2
• C=4
Next we input this values into the quadratic formula x= (-bIV(b? - 4ac)) / (2a)
x=（-（-2）土～（（-2）3-4（1）（4））/（2（1））
（-2）|+-|V（-2）3-4（1）（4）
‡=
2(1)
The equation that best set up the quadratic formula is
2）+-｜V（-2）-4（1）（4）
Hence, option A is the correct answer.