Questions: Write the expression in terms of i and simplify. √(-225)=

Write the expression in terms of i and simplify. √(-225)=
Transcript text: Write the expression in terms of $i$ and simplify. \[ \sqrt{-225}= \]
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Solution

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Solution Steps

To solve the given problem, we need to express the square root of a negative number in terms of the imaginary unit \(i\). The imaginary unit \(i\) is defined as \(\sqrt{-1}\). Therefore, we can rewrite \(\sqrt{-225}\) using \(i\).

Solution Approach
  1. Recognize that \(\sqrt{-225}\) can be expressed as \(\sqrt{225} \times \sqrt{-1}\).
  2. Simplify \(\sqrt{225}\) to 15.
  3. Combine the results to get \(15i\).
Step 1: Recognize the Imaginary Unit

To solve \(\sqrt{-225}\), we need to express it in terms of the imaginary unit \(i\), where \(i = \sqrt{-1}\).

Step 2: Simplify the Square Root

We can rewrite \(\sqrt{-225}\) as: \[ \sqrt{-225} = \sqrt{225 \times -1} = \sqrt{225} \times \sqrt{-1} \]

Step 3: Calculate the Real and Imaginary Parts

We know that: \[ \sqrt{225} = 15 \quad \text{and} \quad \sqrt{-1} = i \] Thus: \[ \sqrt{-225} = 15i \]

Final Answer

\[ \boxed{15i} \]

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