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Mathematics 8 Online
OpenStudy (anonymous):

can anyone help me with this question please the question is (the student said (9x)-² = -81x² is the student correct ? why or why not ?)

OpenStudy (anonymous):

I think he's wrong because that is not well written. It makes no sense.

Directrix (directrix):

The student is incorrect. |dw:1333152603972:dw|

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