Question

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Answer 1

$(-5 frac{1}{3}*b ^{2} c^{3}) ^{2}*(- frac{9}{16}) b^{3} c^{5}=( frac{16}{3}) ^{2} b^{4} c^{6}*(- frac{9}{16}) b^{4} c^{5}}=-16 b^{8} c^{11}$