Question

If one zero of the quadratic polynomial 2x²+3x+k is 1/2 , the value of k is ​

Answer 1

Answer:

given f(x)= 2x²+3x+k

f(1/2)=2(1/2)²+3(1/2)+k=0

=2×1/4+3/2+k=0

1/2+3/2+k=0. 1/2+3/2= 4/2= 2

2+k=0

k= -2