$\left(\frac{5}{7}x^{n+1}-\frac{3}{10}ab^2\right)^2$
$\frac{\sin\left(2x\right)+\cos\left(2x\right)+1}{\sin\left(x\right)+\cos\left(x\right)}=\frac{2}{\sec\left(x\right)}$
$\lim_{x\to4}\left(\frac{x^2-64}{x^2+4x-36}\right)$
$\int\left(5x^2-9\right)^37xdx$
$-2x=14$
$x^9+2x^2-x-2$
$15z=45$
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