Question

if one of the zeroes of the Quadratic polynomial x²+kx-5/4 is ½,then the value of k​

Answer 1

Answer:

k=2

Step-by-step explanation:

Product of the zeroes = c/a = -5/4

Therefore, other zero = -5/4 ÷ 1/2 = -5/2

Sum of zeroes = -5/2 + 1/2 = -2 = -b/a = -k

=> k = 2

Answer 2

Step-by-step explanation:

p(x) = x^2 +kx-5/4

p(1/2) = (1/2)^2 +k(1/2) -5/4

0= 1/4 +k/2-5/4

0= 1+2k-5/4

0= -4+2k/4

0= -4 +2k

4=2k

4/2=k

2=k

hope this is correct ans