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GRID METHOD | MATH WIZARD

1. Place one binomial at the top of the 2×2 grid (for binomials).
2. Place the other binomial on the left side of the grid.
3. Position the terms so that each term (and its sign) lines up with a row or column of the grid.
4. Multiply each intersecting row and column to fill the interior of the grid.
5. Combine like terms in the interior of the grid.
6. Notice that the x-terms lie on the diagonal of the grid.

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