Find the cube-roots of -2197
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Prime factors of 2197:
−21973=−(13×13×13)3=−13\sqrt[3]{-2197}\\[1em] = -\sqrt[3]{(13 \times 13 \times 13)}\\[1em] = -133−2197=−3(13×13×13)=−13
Hence, −21973=−13\sqrt[3]{-2197} = -133−2197=−13
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