$y'=e^{4x}-5senx;\:y\left(0\right)=5$
$\lim_{x\to1}\left(\frac{x^{7a}-7ax+7a-1}{\left(x-1\right)^2}\right)$
$\frac{x-2}{x^2-4x}$
$\frac{x-1}{4}+\frac{x}{3}=\frac{x+1}{2}$
$5\left(2x\right)^4\left(3\right)$
$\left(+6\right)-\left(+7\right)+\left(-7\right)-\left(-6\right)-\left(+2\right)$
$\sqrt{\frac{x}{y^{\frac{2}{5}}}}$
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