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Find a^2+9/a^2=31 what is the value of a-3/a |
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Answer» a^2+9/a^2=31 a^2+(3/a)^2=31 a^2+(3/a)^2-6=31-6 ADDING and SUBTRACTING 6 on both the SIDES (a-3/a)^2=25 a-3/a=5 Therefore a-3/a=5 |
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