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samirpandeyit62
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This is coming out straight from the OG 11th Edition Quantitative Review book (written by GMAC themselves):
"every positive n has 2 square roots, one positive and one negative. but √n denotes the positive number whose square is n.
E.g. √9 denotes 3
The 2 square roots of 9 are √9=3, and -√9=-3"
hope this clarifies.
Best.
II
