Consider functions fand g.
f(x)=11x³-3x²
g(x)=7x⁴+9x³
Which expression is equal to f(x)· g(x) ?
A. 77x¹²+99x⁹-21x⁸-27x⁶
B. 77x⁷+78x⁶-27x⁵
C. 7x⁴+99x³-3x²
D. 18x⁷+10x⁶+6x⁵