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solve for x: x to the negative 3rd power is equal to 27 over 64
Remember what a negative exponent means ... it's just a positive exponent in the denominator of a fraction. 'x' to negative 3rd power is the same as 1/x³ .
1/x³ = 27/64
Take the reciprocal of each side:
x³ = 64/27
x= ∛64/27 = ∛64 / ∛27.
64 is the perfect cube of 4. 27 is the perfect cube of 3.
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