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簡約 (z−8)2z2−64
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Solution
z−8z+8
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Solution steps
Solve by:
One step at a time
(z−8)2z2−64
Factor z2−64:(z+8)(z−8)
=(z−8)2(z+8)(z−8)
Apply exponent rule: ab+c=ab·ac
(z−8)2=(z−8)(z−8)
=(z−8)(z−8)(z+8)(z−8)
Cancel the common factor: z−8
=z−8z+8
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