Question

$7 \times {}^{2} + 14 = 0$
​

Answer 1

Respuesta:

$x=\sqrt{2}i,\:x=-\sqrt{2}i$

Explicación paso a paso:

$7x^2+14=0\\\\7x^2+14-14=0-14\\\\7x^2=-14\\\\\frac{7x^2}{7}=\frac{-14}{7}\\\\x^2=-2\\\\x=\sqrt{-2},\:x=-\sqrt{-2}\\\\x=\sqrt{2}i,\:x=-\sqrt{2}i$