$7a\:b+12b+a^2;\:a=-3;b=4$
$\int_1^48xdx$
$\left(x-8m\right)^2$
$4sin^2xcos^2x=1-cos^2x$
$\left(4y^3+2y\right)\frac{dy}{dx}=2+4x$
$\left(2x\right)^{6}-\left(3yz\right)^{4}$
$\lim_{x\to\infty}\frac{\sqrt{4+x+x^2}-x}{x^2}$
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