$\left(3x+a-b\right)\left(3x+a-b\right)$
$-0.399=log\left(x\right)$
$\left(4m+8f\right)\left(4m-8f\right)$
$7\cos\left(2x\right)=7\sin\left(x\right)^2+2$
$5x+12=2x+3$
$\csc\left(a-540\right)$
$e^x-e^x$
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