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Write the Expression in the Form Bi, Where B Is $\sqrt { - 7 }$

Question 289

Multiple Choice

Write the expression in the form bi, where b is a real number.
- $\sqrt { - 7 }$

A) $- \sqrt { 7 }$
B) $7 \sqrt { i }$
C) $\sqrt { 7 } i$
D) $\frac { 7 } { 2 } \mathrm { i }$

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