$11g-8=135$
$12.5x-9x-13+2.5x$
$\cos^2\left(a\right)+\sin^2\left(a\right)$
$4w+\left(2x-\left(\left(y-2z\right)-3x+4z\right)-\frac{3}{8}w+2y+\frac{2}{11}z\right)$
$13,551-13,714$
$\int_1^2\left(\frac{1}{\sqrt{\left(9-x^2\right)}}\right)dx$
$n^2-7n-18$
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