An example of the difference of squares would be: a^2-b^2 = (a+b)(a-b)
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Step-by-step explanation: this will help you out
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The metric system is an alternative system of measurement used in most countries, as well as in the United States. The metric system is based on joining one of a series of prefixes, including kilo-, hecto-, deka-, deci-, centi-, and milli-, with a base unit of measurement, such as meter, liter, or gram.
