S + \overlineS = rac(a + b)^2 + (a - b)^2a^2 - b^2 = rac2a^2 + 2b^2a^2 - b^2. - AMAZONAWS

📅 March 6, 2026 👤 scraface

Mar 06, 2026

$S + \overline{S} = rac{(a + b)^2 + (a - b)^2}{a^2 - b^2} = rac{2a^2 + 2b^2}{a^2 - b^2}.$