$\lim_{x\to0}tan\left(x\right)sec\left(x\right)$
$2x+3+5x-6$
$\left(5x\:+p\right)\left(5x-q\right)$
$y^2=289$
$8\sin x-2=6\sin x+2$
$\int c\left(c+8\right)^7dc$
$x y ^ { 2 } = 9$
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