Problem:
Expand and find the sum $p(x) + q(x)$ of the following two polynomials: $p(x) = \frac{1}{343} (19 x-20)^3, q(x) = -\frac{1}{343} (43 x-50)^3$
Answer:
$-\frac{72648 x^3}{343}+\frac{255690 x^2}{343}-\frac{299700 x}{343}+\frac{117000}{343}$
{'source': 'AMPS', 'file': 'amps/mathematica/algebra/polynomial_arithmetic/28351.txt'}