Respuesta:
x = ±3
Explicación paso a paso:
3x² - 7 = 20
3x² = 20 + 7
3x² = 27
x² = 27/3
x² = 9
x = ± √9
Saludos ^^
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Verified answer
Respuesta:
x = ±3
Explicación paso a paso:
3x² - 7 = 20
3x² = 20 + 7
3x² = 27
x² = 27/3
x² = 9
x = ± √9
x = ±3
Saludos ^^