Math Formulas:Solutions of algebraic equationsQuadric Equation:ax2+bx+c=0

Solutions (roots):x1,2=bb24ac2a

IfD=b24acis thediscriminant, then the roots are1.real and unique ifD>02.real and equal ifD=03.complex conjugate ifD02.all roots are real and at last two are equal ifD=03.all roots are real and unequal ifD