f(x)=11x10+3x8g(x)=−15x7+7x5The polynomial p(x) is defined as the product of the given polynomials, f(x) and g(x). What is the coefficient of x15 in p(x)?
A
122
B
77
C
32
D
15
\[f(x) = 11x^{10} + 3x^{8} \\ g(x) = -15x^{7} + 7x^{5}\]The polynomia… | Math SAT Question | Ronan SAT