যদি g(x) = x3 + ax2 – 3x – 6 হয়, তবে a এর মান কত হলে g (-2) = 0 হবে?
g(x) = x3 + ax2 - 3x - 6
0 = (-2)3 + a(-2)2 - 3(-2) - 6
0 = -8 + 4a + 6 - 6
0 = -8 + 4a
4a = 8
a = 2