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Could light have existed without matter? Which numbers -1,0,2/3,1 are the zeroes of the quadratic polynomial 3x^2+x-2? 5 2/3 + 29/69 + 6 21/23? Where did the universe /life on earth come from ? Podrian ayudarme a resolver estos radicales pofavooor?, √2 −√3 −√5 / √2 + √3 + √5 de ante mano enserio gracias?