Factoring method WARNING: For the following lesson, you will need a number of vital accessories: ·Pencil (most math teachers prefer this--you'd want to be able to erase, anyway) ·Paper ·Graphic calculator--TI-82 or better (it must be able to let you write programs and run them) ·Knowledge of solving a quadratic equation, using the Quadratic Formula, or the Quadratic Formula program, or otherwise ·You must currently be taking an algebra course, at least one semester into …showed first 75 words of 553 total…

…showed last 75 words of 553 total…you have an expression equaling y, you can substitute it back into the second equation. This will leave you with x(-x+23)=120. When you distribute, you should get -x2+23x+0=120. Then, subtract 120 from each side, simply giving you -x2+23x-120=0. You can then plug into your quadratic formula program, and you will get your two magic numbers. You may then proceed with your factoring. For additional help on factoring, consult your algebra professor (or teacher).