Solve the following quadratic equations. Be sure to check your solutions.
Draw an area model and diamond. Generic rectangle labeled as follows: Interior upper right box is negative 42. Interior lower left box is X squared. Diamond problem: Left blank, Right blank, Top 42, x squared, Bottom negative 13, x.
Factor. Added to the rectangle: Interiors: upper left, negative 6, x, & lower right, negative 7, x. Exteriors: left edge, top, negative 6, & bottom, x, bottom edge, left, x, & right, negative 7. Added to the diamond problem: Left negative 6, x, Right negative 7, x.
Make sure you find the other solution.
There are only two terms, so factor using the GCF.
Notice that each term is a multiple of