Q. Rewrite the expression in the form zn.Write the exponent as an integer, fraction, or an exact decimal (not a mixed number).5z4z−23=□
Identify expression and operation: Identify the expression and the operation to be performed.The expression is 5z4z−23. We need to simplify the expression inside the root and then apply the fifth root.
Combine exponents of z: Combine the exponents of z using the property of exponents that states za⋅zb=za+b.z4⋅z−23=z4−23
Convert mixed number to improper fraction: Convert the mixed number to an improper fraction to combine the exponents easily. 4 can be written as 28, so the expression becomes z28−23.
Subtract exponents: Subtract the exponents.z28−23=z25
Apply fifth root: Apply the fifth root to the expression.5z25=(z25)51
Simplify expression using exponent property: Use the property of exponents (am/n)p=am/n⋅p to simplify the expression.(z5/2)1/5=z(5/2)⋅(1/5)
Multiply exponents: Multiply the exponents. z(25)⋅(51)=z105
Simplify exponent: Simplify the exponent. z105=z21
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