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Rodney Horn
Mathematics
11 April, 10:06
64-81d^2
How do I do this?
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Camila Richard
11 April, 10:25
0
It is not clear what you want.
64=8²
81d² = (9d) ²
64-81d²=8² - (9d) ² = (8-9d) (8+9d)
Is this OK?
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