Simplifying rational expressions with negative signs

The video tutorial focuses on factoring both the numerator and denominator of a polynomial expression. The instructor emphasizes the importance of factoring out negative terms and rearranging expressions into standard form. The tutorial further explores the simplification of expressions, particularly focusing on the difference of squares and the importance of considering real numbers only. The instructor also highlights the significance of identifying domain restrictions before simplifying expressions, ensuring that values making the denominator zero are excluded from the domain.

What is the final simplified result of the expression as mentioned by the teacher?

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How does the teacher suggest handling complex numbers when determining domain restrictions?

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What is the overall strategy the teacher advises for simplifying expressions while considering domain restrictions?

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