$3x^4-3x^4$
$\int0dy$
$-20+-2+-2+-20+-20$
$32a+20bc;\:a=-2;\:b=6;\:c=5$
$-sin\left(-x\right)+csc\left(-x\right)$
$y+x+z=40$
$\frac{1-cos^2x}{\tan^2\left(x\right)}+2\sin\left(x\right)^2$
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