x4x3+2x2−x−2\frac{x^4}{x^3+2x^2-x-2}x3+2x2−x−2x4
9x−2y418xy6\:\:\:\frac{9x^{-2}y^4}{18xy^6}18xy69x−2y4
x2+9x−136x^2+9x-136x2+9x−136
8abc2+abc2+3−18abc^{2}+abc^{2}+3-18abc2+abc2+3−1
4⋅∣−3+(+2)(−1)∣4\cdot\left|-3+\left(+2\right)\left(-1\right)\right|4⋅∣−3+(+2)(−1)∣
g2+14g+49g^2+14g+49g2+14g+49
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