Respuesta :
The mistake is in Step 2.
To raise 4^(-5) to the 3rd power, you need to multiply the exponents getting 4^(-15). Chris' mistake is that he added the exponents instead of multiplying the exponents.
To raise 4^(-5) to the 3rd power, you need to multiply the exponents getting 4^(-15). Chris' mistake is that he added the exponents instead of multiplying the exponents.