$k^2+14k+36$
$1\:x\:10\:+\:9\:x\:10-1\:+\:6\:x\:10-2\:+\:8\:x\:10-3\:$
$\frac{\left(2-\left(\frac{sin\left(x\right)}{cos\left(x\right)}\right)^2\right)}{\left(1+\left(\frac{sin\left(x\right)}{cos\left(x\right)}\right)^2\right)}$
$\frac{x^3-2x^2-11x+12}{x-1}$
$-5r+\:8r\:+\:5$
$\left(-6\right)^2-5$
$5y+3y+2y$
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