Vertex form is basically commplete the square
y=a(x-h)^2+k
y=x^2+14x+4
take 1/2 of 14 and square it, (7^2=49)
add that and its negative to right side
y=x^2+14x+49-49+4
factor perfect squaer
y=(x+7)^2-49+4
y=(x+7)^2-45
answer is A
I hope this helps you
?.12%=72
?.12=72.100
?=6.100
?=600
Divide both sides by their LCD, 2
2/4 = 1/2
1/2 is irreducible
