$\left(x-2\right)\left(x+2\right)-\left(2x+3\right)^2$
$\left(10r^2p^5o^3-2p^4\right)^2$
$3\sin^22x-1=0$
$100x^2+26x$
$\frac{\left(x^4-2x^3-2x^2+0x-3\right)}{\left(x^2-2x+1\right)}$
$\int_0^430-3xdx$
$r\:+\:16\:=\:8$
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