Respuesta :

quadratic eq standard form is

Ax^2+bx+c=0

a, b and c are known values. 
a can't be 0."x" is the variable 

lets take an example

x^2 − 4x+2 = 0

x^2-2x-2x+2=0
x(x-2) - 1(x-2)=0

x=1,2


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