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Mathematics 13 Online
OpenStudy (anonymous):

What is the factored form of 9x² – 64? (3x – 8)² (3x + 8)² (3x – 8)(3x + 8) (9x – 8)(x + 8)

OpenStudy (anonymous):

(3x – 8)(3x + 8)

OpenStudy (anonymous):

Use the difference of squares formula : \[9x² – 64=(3x)^2-8^2=(3x-8)(3x+8).\]

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