$$3 ^ { 2 } - \sqrt [ 3 ] { 675 } + \sqrt { 27 } - \sqrt [ 3 ] { 8 }$$
$3\sqrt{3}+7-3\times 5^{\frac{2}{3}}\approx 3.424099208$
$$9-\sqrt[3]{675}+\sqrt{27}-\sqrt[3]{8}$$
$$9-\sqrt[3]{675}+3\sqrt{3}-\sqrt[3]{8}$$
$$9-\sqrt[3]{675}+3\sqrt{3}-2$$
$$7-\sqrt[3]{675}+3\sqrt{3}$$
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