Elementary Algebra

Topics

• Polynomials

$a{x}^2+bx+c=0$

• $x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$
• $a=1\to x=m\pm \sqrt{m^2-p},m=-\frac{b}{2},p=c$
  • $m$ is the mean of the roots
  • $p$ is the product of the roots