Enrhifo (complex solution)
\sqrt{7}i\approx 2.645751311i
Enrhifo
\text{Indeterminate}
Rhan Real (complex solution)
0
Rhannu
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\sqrt{-7}
Tynnu 12 o 5 i gael -7.
\sqrt{7}i
Ffactora -7=7\left(-1\right). Ailysgrifennu ail isradd y lluoswm \sqrt{7\left(-1\right)} fel lluoswm ail israddau \sqrt{7}\sqrt{-1}. Drwy ddiffiniad, ail isradd -1 yw i.
\sqrt{-7}
Tynnu 12 o 5 i gael -7.
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