Expression: c + 4, 2y - 3, x2 + 6x + 5, 4s - 7, Equation: b + 3 = 10, 3s - 8 = 4, 5p + 2 = 32, 2x - 3 = 11, Formulae: C = ℼd, A = ℼr2, a2 + b2 = c2, d = s x t,

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