$12+x-x^2\ge0$
$25d^2+2^2+4$
$x^2+9x+18=0$
$1351+-128$
$-4+2-\left(4+5\right)$
$3\sin^2\left(x\right)\cos\left(x\right)=\cos\left(x\right)$
$x^2+5x+\frac{25}{5}$
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