$10-19h+13$
$sec^2x\left(1+6cscx\right)$
$4^2\cdot4^6$
$-19+12y+15k-3y-5k+3$
$\frac{x^{-3}y^{-1}}{\left(2yx^4\right)^2}$
$\left(2x+2\right)-\left(2x\right)^2=84$
$1+5x>5-3x$
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