dtqb2074 dtqb2074 03-07-2024 Baldor contestada Calcula el valor numérico dados los valores de las variables. 1. 2a2b3c – 7a; a = 2, b = 3, c = 5 2. x3 + x2y – xy2 + y3; x = 1, y = 2 3. 5xy – 4x2y2; x = –1, y = 2 4. 3x3 2 – x2; x = –2