$\left(8x+7y\right)\left(8x-7y\right)$
$tan\:u+cot\:u$
$\frac { 6 x ^ { 3 } + 19 x ^ { 2 } + 16 x + 22 } { 3 x + 2 }$
$3x+5>9+x$
$y=\left(x^2+4x-5\right)^2$
$30a^2+13a-10$
$\left(2x^3+7\right)\left(5x^2-10\right)$
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