Answer
$2$
Work Step by Step
$$\sqrt[3]{\sqrt{\sqrt{169}+\sqrt{9}}+\sqrt{\sqrt[3]{1000}+\sqrt[3]{216}}}$$ $$=\sqrt[3]{\sqrt{13+3}+\sqrt{10+6}}$$ $$=\sqrt[3]{\sqrt{16}+\sqrt{16}}$$ $$=\sqrt[3]{4+4}$$ $$=\sqrt[3]{8}$$ $$=2$$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.