$\lim_{x\to4}\left(\frac{x^2+3x-28}{x^3+343}\right)$
$\int_0^b\left(x+1\right)^{\left(-\frac{1}{2}\right)}dx$
$64z^3+48z^2+12zy^2^3$
$\left(3m-d\right)^2$
$\int\frac{2x^2+5x+16}{x^4+8x^2+16}dx$
$\left(3-7x\right)^2$
$\left(x^2-8x+6\right)\left(x-2\right)$
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