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OpenStudy (anonymous):
Factor x² - 16 = 0 a.(x + 4)(x + 4) = 0 b.(x - 2)(x - 8) = 0 c.(x + 2)(x - 8) = 0 d.(x + 4)(x - 4) = 0
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OpenStudy (anonymous):
x=4
OpenStudy (mertsj):
\[a^2-b^2=(a-b)(a+b)\]
OpenStudy (anonymous):
It's a difference of two squares I believe. So it would be (x+4)(x-4)
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