Mathematics, 24.05.2021 23:30 Arealbot
Rearrange into the form "x^2 + bx + C = 0" then solve by factorising x^2 - 21 = 4x
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Rearrange into the form "x^2 + bx + C = 0" then solve by factorising x^2 - 21 = 4x...
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