Preparation for math olympiad UKMT junior senior intermediate maths challenge smc jmc imc 2022 2023

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[lawrencejelsma]

As a Set Theory course graduate 👏 Thanks for going back to Set Theory mathematics of {-2, 2} is not the same as {-2} misconception people had in Set Theory coursework! 👏👍 Notice how it fails in quadratic polynomial mathematics: Ay^2 + By + C = 0 has no set of solutions if A=0 quadratic equation or quadratic polynomials mathematics also teach. So with (0)(√x)^2 + (1)(√x) + (2) = 0 has no "set" solutions because A=0! Thanks for sharing! 👏👍

[ChavoMysterio]

_/x=-2
(_/x)^2=(-2)^2
x=4

_/4=-2
2=-2 false statement

Extraneous solution, no solution.
❤️🧡💛💚💙💜