$\lim_{x\to0}\left(\frac{e^x-1}{x^{12}}\right)$
$1-\cos\left(x\right)\cdot1+\cos\left(x\right)^2=1$
$\left(7x+6y\right)\left(4x-5y\right)$
$\left(x^{sinx}\right)=y$
$\int\left(1+2x^2\right)^3\cdot4x$
$\left(2x-1\right)^2-4=0$
$121x^4y^8-49z^{10}$
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