If 3 is a zero of the polynomial 2x2 + x + k, find the value of k.
Given: 3 is one of zeroes of the polynomial 2x2 + x + k , which means x = 3 will satisfy it.
2x2 + x + k = 0
2(3)2 + 3 + k = 0
18 + 3+ k = 0
k = -21
The value of k is -21
