$-16\:+\:-27\:-\:+22\:-\:+15\:+\:+22$
$879.29\cdot1.72$
$50x^2+220x+242$
$\int5x\cosh\left(6x\right)dx$
$64x^2+16x+4$
$\frac{a}{-7}-7=5$
$\int\frac{1}{\sqrt{x^2+121}}dx$
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