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OpenStudy (anonymous):
jack was asked to factor x^2+9. his answer was: (x+3)(x-3). is jack correct? explain. ok so i knnow he isnt right because x^2+9 is already completely factored but i need help explaining
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OpenStudy (anonymous):
what happens when you expand (x+3)(x-3)?
OpenStudy (anonymous):
it becomes x^2-9
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