$t^2+2t-43=0$
$4mn\:+\:2m\:+\:6mn\:-\:9n$
$sinx=-\frac{1}{2}\sqrt{3}$
$6^{x+3}=-1$
$\int_{-\pi}^0\sin\left(18x\right)\cos\left(15x\right)dx$
$ae2-6abe2+abe4$
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