*²+*ax

*+*bx

*= 0 where*c

*are all integers and '*a,b,c

*' is not 1 and '*a

*' is not zero. Include equations that require a common factor to be removed first but that do not leave a coefficient of 1 for the*b

*² term. Include using the difference of two squares where the coefficient of*x

*² is not 1*x