Math Is Fun Forum

  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

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wilwalker8
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Com a entrada em vigor do Sistema Nacional de CERTIFICAÇÃO ENERGÉTICA e da Qualidade do Ar Interior nos Edifícios (SCE), imposto pelos Decretos Lei.

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