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Calculus Examples
(x2−9)
Step 1
Remove parentheses.
x2−9
Step 2
Rewrite 9 as 32.
x2−32
Step 3
Since both terms are perfect squares, factor using the difference of squares formula, a2−b2=(a+b)(a−b) where a=x and b=3.
(x+3)(x−3)