The sum of a number and its square is 42. Which equation can be used to find the two numbers for which this is true?

x2 + x = 42

x2 + 2x = 42

x2 + x + 42 = 0

x2 + 2x + 42=0

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Quien me puede decir cuel es la respuesta de esto 6 (t+5) = - 36

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