solve question 9 urgent please
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-13³-8³+21³
=-13*-13*-13-8*-8*-8+21*21*21
=-2197-512+9261
=6552
=-13*-13*-13-8*-8*-8+21*21*21
=-2197-512+9261
=6552
ginne:
answer wrong
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