Calculators, Formulas and Work with Steps - getcalc.com

    Unknown Value of "x" in Quadratic Equation x2 + 2x + 1 = 0

    Quadratic Equation Calculator

    -1 & -1 are the roots of quadratic equation x2 + 2x + 1 = 0. Users may replace the input values of this equation x2 + 2x + 1 = 0 to verify the similar calculations or generate complete work with steps to find what is the unknown or root value of x.

    Work with Steps for x2 + 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 x2 + 2x + 1 = 0 or to solve the worksheet problems. step 1 Address the input parameters and values
    Quadratic Equation : x2 + 2x + 1 = 0

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

    x = - b ± b² - 4ac2a

    =-(2) ± (22 - 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
    x1 = -2 + 02

    = -2 + 0/2

    x2 = -2 - 02

    = -2 - 0/2

    step 4 By simplifying the above expressions for x1 & x2
    x1 = -2/2
    x1 = -1
    x2 = -2/2
    x2 = -1

    x1 = -1 & x2 = -1 are the roots for equation x2 + 2x + 1 = 0

    Calculators and Calculations