r2+9r+18r^2+9r+18r2+9r+18
(x2+1+x4)3\left(\sqrt[4]{x^2+1+x}\right)^3(4x2+1+x)3
(−2)4 x (−3)7\left(-2\right)^4\:x\:\left(-3\right)^7(−2)4x(−3)7
+813x+8\frac{1}{3}x+831x
121x2−81121 x ^ { 2 } - 81121x2−81
3a2bc+4abc4+4a3a^2bc+4abc^4+4a3a2bc+4abc4+4a
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