$6x\:-\:4;\:x=2$
$jk+3j^2+2jk-5j^2k-jk+6-2j^2$
$x^2+0x-4$
$54.92\cdot18.58$
$8x^4y^3z-4x^2yz$
$simplfy\:\frac{p^6q^4}{p^3q^{16}}$
$\:\int\left(w+\frac{1}{2}\right)\left(w^2+w\right)^3dw$
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