Comments by "B. Xoit" (@b43xoit) on "Math Queen" channel.

  1. 2 ^ 100 = 2(2^99) = 2^99 + 2^99. Subtract 2^99 and only 2^99 remains.
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  2. https://en.wikipedia.org/wiki/Quadratic_formula
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  3. I guessed the solution, but didn't feel sure whether there was a second sol'n.
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