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\begin { equation } \begin{array}{c}{\text { Which one of the }} \\ {\text { following is false? }} \\ {\text { (a) The square root of }} \\ {9 \text { is } 3 \text { or }-3} \\ {\text { (b) } \sqrt{9}=3} \\ {\text { (c) }-\sqrt{9}=-3} \\ {\text { (d) } \sqrt{9}=\pm 3}\end{array} \end { equation } |
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Answer» all are true |
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