Examine Tamika’s work below. What is Tamika’s error?

Simplify. Express the answers using positive exponents.

Simplify each expression.

Simplify each expression.

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The exponent on x is [___].
4
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The exponent on y is [___].
14
The exponent on z is [___].
4
x4 is in the [___].
numerator
Type "numerator" or "denominator" to complete each statement.
y14 is in the [___].
numerator
z4 is in the [___].
numerator
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