$36x^2+28x^3-8x^4+20x^6-40x^7$
$\left(a+1\right).2-\left(a-3\right).4$
$95 ^ { 2 } + 235 ^ { 6 } + 194$
$e^{9z}=xyz$
$5a+4b-7a-11b$
$\frac{27x^3+\:343m^3}{3x+7m}$
$\left(3x^2-6x+3\right)^2$
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