Question
Find the following special products.$$(a-7)(a+7)$$
Step 1
The FOIL method stands for First, Outer, Inner, Last. This means we multiply the first terms in each binomial, then the outer terms, then the inner terms, and finally the last terms. So, we have: \[ (a-7)(a+7) = a*a + a*7 - 7*a - 7*7 \] Show more…
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