Respuesta:
X = 3
Explicación paso a paso:
3 X² + 15 = 42
3 X ² = 42 - 15
3X² = 27
X² = 27/3
X = √ 9
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Respuesta:
X = 3
Explicación paso a paso:
3 X² + 15 = 42
3 X ² = 42 - 15
3X² = 27
X² = 27/3
X = √ 9
X = 3