# X2+2x+1=0 solve equation This equationIn algebra, a quadratic equation (from the Latin quadratus for “square”) is any equation having the form{displaystyle ax^{2}+bx+c=0}where x represents an unknown

X2+2x+1=0 solve equation

This equation

In algebra, a quadratic equation (from the Latin quadratus for “square“) is any equation having the form

{displaystyle ax^{2}+bx+c=0}

where x represents an unknown, and ab, and c represent known numbers such that a is not equal to 0. If a = 0, then the equation is linear, not quadratic. The numbers ab, and c are the coefficients of the equation, and may be distinguished by calling them, respectively, the quadratic coefficient, the linear coefficient and the constant or free term.

Because the quadratic equation involves only one unknown, it is called “univariate“. The quadratic equation only contains powers of xthat are non-negative integers, and therefore it is a polynomial equation, and in particular it is a second degree polynomial equation since the greatest power is two. 