Add or subtract the radical expressions. Assume that all variables under radicals represent positive values. Simplify your answer. 
Definitions:
Abstract
Name usually given to a synopsis that accompanies long technical, professional, or academic reports.
Conversational Tone
A style of writing or speaking that is informal, friendly, and similar to everyday spoken language.
Personal Phrases
Expressions or idioms that are characteristic of or used by a particular person.
Personal Pronouns
Personal pronouns are words used to replace the names of people or entities, typically indicating a specific person or group from the perspective of the speaker or writer (e.g., I, you, he, she, it, we, they).
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