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) $\frac { 7 } { 2 } \mathrm { i }$

Question

Quizplus · Accepted Answer

The square root of a negative number can be expressed in terms of i (the imaginary unit), where $i = \sqrt{-1}$. Therefore, $\sqrt{-7} = \sqrt{7} \cdot \sqrt{-1} = \sqrt{7}i$.

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

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