$h^2-2h+1$
$sin^2y\:dx\:+\:cos^2x\:dy\:=0$
$tan^2sin^2=tan^2-sin^2$
$\left(4a+2b\right)\left(6a-2b\right)$
$-25-\left(23\right)-\left(-10\right)$
$x^2-6x-11=0$
$4x^2+12+9$
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