Multiply or Divide $\sqrt { 4 } \cdot \sqrt { - 1 }$

question 316

Multiple Choice

Multiply or divide.
- $\sqrt { 4 } \cdot \sqrt { - 1 }$

• A) \(- 2 \mathrm { i }\)
• B) \(- 2\)
• C) 2
• D) \(2 \mathrm { i }\)

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