30(−2)\frac{30}{\left(-2\right)}(−2)30
3(10+2b)=243\left(10+2b\right)=243(10+2b)=24
7x(x2−3)47x\left(x^2-3\right)^47x(x2−3)4
∫e9x2dx\int e^{9x^2}dx∫e9x2dx
(mn3)(m4n2)\left(mn^3\right)\left(m^4n^2\right)(mn3)(m4n2)
∣−4∣ ⋅∣2∣+∣−8∣\left|-4\right|\:\cdot\left|2\right|+\left|-8\right|∣−4∣⋅∣2∣+∣−8∣
ax2−ax−2aax^2-ax-2aax2−ax−2a
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