$\left(4x-2y\right)\left(6x-9y\right)$
$\sin\left(x\right)^2=1-\cos\left(0.45\right)^2$
$\int\left(2x^2+7\right)dx$
$3x^3-22x^2-47x+18$
$\frac{9-x^2}{3+x^2}$
$x-10<30$
$48-\left(-31\right)$
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