Algebra - Difference of perfect squares rule
Difference of perfect squares rule
This expansion can now provide us with another rule when expanding
binomial factors of the form (_a_ +_ b_)(_a_ - _b._)
We call this rule the (DOPS) rule.
Sometimes this rule is referred to as DOTS (Difference of Two Squares),
however DOPS (Difference of Perfect Squares) is the preferred name.
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