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Exponent laws: power of a power
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Learn it Power of a power: multiply the exponents, $(x^a)^b = x^{ab}$. A power of a product or fraction applies to every factor, including the number in front.
Example: $(-2x^3y)^4$
- $(-2)^4 = 16$.
- $(x^3)^4 = x^{12}$, $y^4$.
- Answer: $16x^{12}y^4$.
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