Hey!
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The x-term has a coefficient of 2: 2x
The z-term has a coefficient of -1: -z
Together: 2x - z
The expression has a constant less than zero = 5 + 2z² (When it says a constant term less than zero you can assume that it can be any number being subtract by z).
Final Answer: 2x - z - 5 + 2z²
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Hope This Helped! Good Luck!
