[size=150]1. Click on the "New Problem" button to generate another quadratic expression in x.[br]2. Type your [b]factors[/b] in the yellow [b][color=#ffff00]yellow [/color][/b] input boxes at the [b]top [/b]and [b]side[/b] of the [b]multiplication frame.[/b][br]3. In your final answer, type in the product of the factors eg [br] if the factor at the top is 2x -4 and the factor on the side is -x-2[br] your answer is (2x-4)(-x-2) or -(2x-4)(x+2) or -(x+2)(2x-4)[br] The system is able to detect the above three answers as the same result.[/size]

[url=https://phet.colorado.edu/sims/html/area-model-algebra/latest/area-model-algebra_en.html]https://phet.colorado.edu/sims/html/area-model-algebra/latest/area-model-algebra_en.html[br][img]https://phet.colorado.edu/sims/html/area-model-multiplication/latest/area-model-multiplication-420.png[/img][/url]