((2 * x + (-3))^3 - x^5)^2 after a call to 'expand' becomes x * x * x * x * x * x * x * x * x * x + 54 * x * x * x * x * x + -108 * x * x * x * x * x * x + 72 * x * x * x * x * x * x * x + -16 * x * x * x * x * x * x * x * x + x * x * x * x * x * x * 64 + x * x * x * (-432) + 108 * x * x * x * x * 8 + -72 * x * x * x * x * x * 8 + 1296 * x * x * x * x + x * x * 1944 + 108 * x * -36 * x * x + 2916 * x * x + x * (-2916) + 729.
exp(x) after a call to 'expand' becomes exp(x).
(x + 3)^3 + sin((x + 3)^3) after a call to 'expand' becomes 27 + 27 * x + 9 * x * x + x * x * x + sin(27 + 27 * x + 9 * x * x + x * x * x).
(x^2 * (1 + x^2) + (9 + x * (6 + x)) / (4 + x))^3 after a call to 'expand' becomes (x * x + x * x * x * x + (9 + 6 * x + x * x) / (4 + x))^3.
((x + 1) / (x + 2) * (x + 3) / (x + 4)) / ((x + 5) / (x + 6) * (x + 7) / (x + 8)) after a call to 'expand' becomes ((x + 1) / (x + 2) * (x + 3) / (x + 4)) / ((x + 5) / (x + 6) * (x + 7) / (x + 8)).
((x + 1) / (x + 2) * (x + 3) / (x + 4)) / x after a call to 'expand' becomes ((x + 1) / (x + 2) * (x + 3) / (x + 4)) / x.
27 + 27 * x + 9 * x * x + x * x * x after a call to 'expand' becomes 27 + 27 * x + x * x * 9 + x * x * x.
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