Question 91
Find the real number $A$, given that the coefficient with $x^{12}$ in the polynomial
$$
(1 + x^4)^{12} + A (x(1 - x^2)^2)^{12}
$$
equals 100.
$$
(1 + x^4)^{12} + A (x(1 - x^2)^2)^{12}
$$
equals 100.
MathNet 2012 Question 91
Math Olympiad Vault · MathNet 2012