I’m not sure what steps i’m doing wrong but i got -1/2

1/2

Step-by-step explanation:3=6/2

6/2-5/2=1/2

Idk maybe you’re writing 3 as 4/2 or you’re changing 1/2 to -1/2

(5x-1)^2= (5x)^2-2(5x)×1+(1)^2=25x^2-10x+1

h is the x-coordinate of the vertex

step-by-step explanation:

we have

in this function

the point represent the vertex of the function

so

h is the x-coordinate of the vertex

k is the y-coordinate of the vertex