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Expanding single brackets

Example: Expand using the grid method

Section titled “Example: Expand using the grid method”

Draw a grid with one row and two columns, since we have one term outside the brackets () and two terms inside the brackets ( and ):

Although it’s not necessary to write the multiplication sign in the top-left it can help remind us that we are multiplying each row term by each column term.

Now, multiply each term inside the brackets by the term outside the brackets:

Add the terms in the middle of the grid together to get the final answer:

  • Answer: