Question

If one zero of the quadratic polynomial x2 + 3x + k is 2, then value of k is
Options
(a) -10
(b) 10
(c) 6
(d) -6​

Answer 1

2 is a zero of x2+3x+k.

Thus, (2)2+3(2)+k=0

k+10=0

k=−10