QQuestionAnatomy and Physiology
QuestionAnatomy and Physiology
# Combine these radicals: $- 3 \sqrt{81}+\sqrt{16}$
A. - 23
B. - 11
C. $- 3 \sqrt{97}$
D. $- 3 \sqrt{13}$
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Answer
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Step 1I'll solve this step by step, following the LaTeX formatting guidelines precisely:
Step 2: Simplify \sqrt{81}
- $$\sqrt{81} = 9$$ (since $$9 \times 9 = 81$$)
Final Answer
Key insights: - Always simplify radicals first by finding perfect square roots - Multiply the coefficient with the simplified radical - Perform standard arithmetic operations - The problem tests understanding of radical simplification and basic arithmetic
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