$$\sqrt [ 3 ] { 24 } + \sqrt [ 3 ] { 81 } - 2 \sqrt [ 3 ] { 3 } = x x ^ { 3 } =$$
$x=\sqrt[3]{3}i\approx 1.44224957i$
$x=\sqrt[3]{3}\approx 1.44224957$
$x=-\sqrt[3]{3}\approx -1.44224957$
$x=-\sqrt[3]{3}i\approx -0-1.44224957i$
$x=\sqrt[3]{3}\approx 1.44224957$
$x=-\sqrt[3]{3}\approx -1.44224957$
