$8^2x-1+6x+1$
$x-2>10$
$12-\left(14-\left(9-15\right)+6\right)$
$-901-1862$
$19.2-52$
$\frac{\left(cot\left(x\right)+tan\left(x\right)\right)}{sec\left(-x\right)}$
$\sqrt{25}-4+3\cdot2$
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