$2^{6x-8}\cdot64^{2-x}=2^{9x+4}$

$\int\left(\frac{1+3x+7x^2-2x^3}{x^2}\right)dx$

$( 1 - 2 n ) ^ { 3 }$

$f\left(x\right)=\left(x^2+5x\right)^4$

$\sec^2d\csc^2d=\sec^2d+\csc^2d$

$4\:.\:\frac{1^3}{2\:}\sqrt[3]{12\:.\:2\:.\:9}$

$\sec\left(\arctan\left(\frac{4}{x}\right)\right)$