Question 1182790
.


Look into the lesson


&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/quadratic/lessons/Solving-quadratic-equations-without-quadratic-formula.lesson>Solving quadratic equations without quadratic formula</A>


in this site, &nbsp;and find there tens of examples of quadratic equations, &nbsp;that can be solved by factoring 

without using the quadratic formula.



It is important to be familiar with some amount of basic cases to successfully and quickly 
factor &nbsp;MENTALLY &nbsp;quadratic equations with relatively small integer coefficients.


It will help you as much as the multiplication table helps you calculate mentally without using a calculator . . . 



From the opposite hand side, &nbsp;to learn the quadratic formula and to see numerous examples of its application, 

look into the lessons

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/quadratic/lessons/Introduction-Into-Quadratics.lesson>Introduction into Quadratic Equations</A>

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/quadratic/lessons/proof-of-quadratic-by-completing-the-square.lesson>PROOF of quadratic formula by completing the square</A>

in this site, &nbsp;and learn the subject from there.



Happy learning &nbsp;(&nbsp;!&nbsp;)