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X² + 30 = 11xx² - 11x + 30 = 0x - 6x - 5 - 6x - 5x = - 11x(x - 6)(x - 5) = 0x - 6 = 0 y x - 5 = 0x = 6 x = 5CS = (5 ; 6).

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5

X² + 30 = 11xx² - 11x + 30 = 0x - 6x - 5 - 6x - 5x = - 11x(x - 6)(x - 5) = 0x - 6 = 0 y x - 5 = 0x = 6 x = 5CS = (5 ; 6).