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7. Factoring - 2! 2부

7. Factoring / Factoring Special Products / 문제 1

문제 1

Factor $x squared minus 4$ .

A

$(x + 2) (x - 2)$

B

$open paren x minus 2 close paren squared$

C

Cannot be factored

D

$(x + 4) (x - 1)$