# Unknown Value of "x" in Quadratic Equation x^{2} + 2x + 1 = 0

## Work with Steps for x^{2} + 2x + 1 = 0

The below work with steps may helpful for grade school students to understand how to find unknown or root values of x for quadratic equation x^{2} + 2x + 1 = 0 or to solve the worksheet problems.
step 1 Address the input parameters and values

Quadratic Equation : x^{2} + 2x + 1 = 0

step 2 Substitute a , b and c values in below formula

x = - b ± √b² - 4ac2a

=-(2) ± √(2^{2} - 4 (1) (1))2(1)

=-2± √4 - 4 (1)(1)2

=-2± √4 - 42

=-2± √02

step 3 Solve the above expression for minus & plus values

x_{1} = -2 + √02

= -2 + 0/2

x_{2} = -2 - √02

= -2 - 0/2

step 4 By simplifying the above expressions for x_{1} & x_{2}

x_{1} = -2/2

x_{1} = -1

x_{2} = -2/2

x_{2} = -1

x_{1} = -1 & x_{2} = -1 are the roots for equation x^{2} + 2x + 1 = 0