Explain how I would use algebra times to multiply two binomials (FOIL)?
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The same way that factoring a number is different from multiplying two factors. In general, it is much easier to multiply two factors together, than to find factors that give a certain product.
a²-b²
Use the "F-O-I-L" Method when multiplying two binomials. F-O-I-L stands for First, Outer, Inner, Last. Multiply the first terms together, then the outer terms, the inner terms, and the last terms.
A harder version of algebra 1
A product is the answer when you multiply two or more numbers. 5x3=15 so 15 is the product. 21x2x1=42 so 42 is the product.