this post was submitted on 06 Jul 2025
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I had a similar experience with square roots, writing both the positive and negative answers. It's wild for a teacher to actively reject correct answers because "that's not what we learned today" (the negative answers, in my case).
I am like not really well informed about this but wasn't the square root symbol thingy (√ <- this one) always set to give the positive root? And the power of 1/2 would give both the positive and negative?
Yes, it is positive, and power 1/2 is, too. Two solutions emerge from solving equations, even primitive ones, like x^2 = C.