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Added information about if the coefficient of X is not one
Quadratic equations can be simplified by factoring it into <math>(x + r)(x + s)</math>, where <math>r + s</math> equals B in <math>y = x^2 + bx + c</math> and <math>rs</math> equals <math>c</math> in the above equation.<ref>http://www.regentsprep.org/regents/math/algtrig/ate3/quadlesson2.htm</ref> Equations that cannot be easily factored this way can become easy to factor by completing the square.
Quadratic equations can be simplified by factoring it into <math>(x + r)(x + s)</math>, where <math>r + s</math> equals B in <math>y = x^2 + bx + c</math> and <math>rs</math> equals <math>c</math> in the above equation.<ref>http://www.regentsprep.org/regents/math/algtrig/ate3/quadlesson2.htm</ref> Equations that cannot be easily factored this way can become easy to factor by completing the square.
=== If the coefficient of X is not one ===
If the coefficient of X is not 1, then one can turn <math>ax^2 + bx</math> into <math>a(x^2 + b/ax)</math>. This works because both <math>x^2</math> and <math>bx</math> were divided by <math>a</math>, which was put back later via [[multiplication]].
== References ==
== References ==