Question

Give me the Correct ans ​

Answer 1

Answer:

answer is in the attachment above

Step-by-step explanation:

hope it helps you! please mark as the brainliest if it did.

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Answer 2

Answer:

2

Step-by-step explanation:

$\frac12$ is a root of $x^2 + kx - \frac54 = 0$

Substitute $\frac12$ into the equation

$\left(\dfrac12\right)^2 + k\left(\dfrac{1}{2}\right)-\dfrac54=0$

$\dfrac14 +\dfrac{k}{2} - \dfrac54 = 0$

$\dfrac{k}{2} = 1$

$k = 2$