find the cube root of 77088 by prime factorisarion method
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54
Answer:
74088=2×2×2×3×3×3×7×7×7 . So, the cube root of 74088 can be written as 3√74088=2×3×7=42
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Therefore, the required cube root of 15625 is 25. Note: Here, after prime factorisation, you will get prime factors. Now, to obtain the cube root, take the similar numbers in groups of three and one factor from each group should be taken and then multiply all such factors
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