$1+\tan^2\left(b\right)$

$8x-4=2m+mx+nx-2n$

$x^2+2x=5$

$( 6 x y ^ { 2 } ) ^ { 2 } ( - 3 x ^ { 2 } y ^ { 3 } ) ^ { 2 }$

$\lim_{x\to0}\left(\frac{3^{\sin\left(x\right)}-1}{2x}\right)$

$-\int\frac{2x-2}{x^2+1}dx$

$coe\:f\left(6-\sqrt[3]{\frac{36}{78364164096}}\right)^{19}$