$3\sin x-1=2\sin x$
$\lim_{x\to1}\left(x^2\right)-2x+4$
$\int\frac{\left(3x^2-21x+32\right)}{\left(x^3-8x^2+16x\right)}dx$
$8+3\left(-3x-1\right)$
$23^2-33+3^2$
$( 5 x + y ) ( 5 x - y )$
$\lim_{x\to\infty}\left(\frac{1-5n^4}{n^4+8n^3}\right)$
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