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a) 64 = 2
= y² (ya que aplicamos lo mismo a ambos lados para no alterar la expresión)
64 = y²
y = √64 = 8
b) (1/4) = -2
y⁻²
1/4 = y⁻²
1/4 = 1/y²
y² = 4
y = 2
f) = 120
y =
y = 2.30