Answer
$x \approx \pm2.59$
Work Step by Step
$5x^{6} - 30 = 1475$
$5x^{6} = 1475 + 30$
$5x^{6} = 1505$
$x^{6} = 301$
$x = \pm301^{\frac{1}{6}}$
$x = \pm2.589...$
$x \approx \pm2.59$
Check:
$5x^{6} - 30 \overset{?}{=} 1475$
$5(\pm2.589...)^{6} - 30 \overset{?}{=} 1475$
$5(301) - 30 \overset{?}{=} 1475$
$1505 - 30 \overset{?}{=} 1475$
$1475 = 1475$