Respuesta:
a = 5 y - 5
Explicación paso a paso:
3a² + 54 = 129
3a² = 129 - 54
3a² = 75
a² = 75 / 3
a² = 25
a = + √25, - √25
a = 5, - 5
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Verified answer
Respuesta:
a = 5 y - 5
Explicación paso a paso:
3a² + 54 = 129
3a² = 129 - 54
3a² = 75
a² = 75 / 3
a² = 25
a = + √25, - √25
a = 5, - 5