Question 217924
think  convention
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It  is  mathematically  correct  that  sqrt 25 = +5 and/ or -5,,,,,(5)^2 =(-5)^2 =25
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current  convention is  as  follows:
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sqrt 25 = 5
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+sqrt 25 = +5
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-sqrt25 = -5
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+/- sqrt 25 = +/- 5,,,,,that  is  +5 and /or -5
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Teachers  have  to  define  just  what  they  want
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