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This method is commonly called the FOIL method .
Rearranging,
Combining like terms,
This use of the distributive property suggests the following rule.
Perform the following multiplications and simplify.
With some practice, the second and third terms can be combined mentally.
Find the following products and simplify.
Perform the following additions and subtractions.
Subtract from .
Be very careful not to write this problem as
This form has us subtracting only the very first term,
, rather than the entire expression. Use parentheses.
Another incorrect form is
This form has us performing the subtraction in the wrong order.
Perform the following additions and subtractions.
For the following problems, perform the multiplications and combine any like terms.
For the following problems, perform the indicated operations and combine like terms.
Add five times to seven times .
Subtract from .
( [link] ) Simplify .
( [link] ) Express the number 198,000 using scientific notation.
( [link] ) How many are there in ?
( [link] ) State the degree of the polynomial , and write the numerical coefficient of each term.
( [link] ) Simplify .
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