$\sqrt[3]{7x}+\sqrt[2]{7}x$
$+1001+101$
$\left(7pq+\frac{1}{2}\right)^3$
$10a+20$
$234+10$
$2\sqrt{4^5}+5\left(4\right)^2+50\left(4\right)+1000$
$\left(3x+ab^2y\right)^2$
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