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Mathematics 21 Online
OpenStudy (anonymous):

WILL GIVE OUT MEDAL FOR ANSWER

OpenStudy (anonymous):

What are the square roots of 324? A. 162 and –162 B. 19 and –19 C. 18 and –18 D. 16 and –16

OpenStudy (anonymous):

@tanya123

OpenStudy (dan815):

factor u silly head

OpenStudy (tanya123):

C. 18 and –18

OpenStudy (dan815):

\[\sqrt{324}\] \[\sqrt{162*2}\] \[\sqrt{81*2*2}\] \[\sqrt{9*9*2*2}\] \[=9*2=18\]

OpenStudy (dan815):

therefore -18 and 18

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