Question

If one zero of the quadratic
polynomial x2 + 3x + k is 2, then the
value of k is​

Answer 1

$p(x) = x^2+3x+k\\\\p(2)=2^2+3*2+k\\\\4 + 6 + k = 0\\\\10 + k = 0\\\\k = -10\\\\hope \ it \ helps \ !!$

Answer 2

Answer:

2 is a zero of x2+3x+k.

Thus, (2) 2+3(2)+k=0

k+10=0

k=−10