$\lim_{x\to\infty}\left(\frac{\sqrt{7+8x^2}}{11+10x}\right)$
$\int e^{cos\left(z\right)}sin\left(z\right)dz$
$f^2+3f+1$
$6\left(4s+7\right)+8$
$1+\sin\left(a\right)-\cos^2\left(a\right)$
$\left(y-\frac{2}{7}\right)\left(x-\frac{1}{9}\right)$
$21-+-42$
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