$x+1+4x+4$
$4y^2-70y+25$
$1^4-1^3-1^2+1-1$
$6x^2\:-3x+8-8x^2+7x+5$
$\left(-63\right)-\left(-27\right)-79$
$\cos\left(2x\right)\cdot\left(1-2\sin\left(x\right)\right)=0$
$\left(-6x^2y\right)\left(3x^3y^2\right)$
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