Question

.

Answer 1

@saseal

Answer 2

expand the 3(x+4)^2 first

Answer 3

i got 3x^2 +48x+1

Answer 4

\[3(x+4)(x+4)+1\]now expand it

Answer 5

not sure can you do the next step

Answer 6

the standard form of the vertex equation is

y = a(x - h)^2 + k

where (h,k) is the coordinates of the vertex ans x = h is the axis of symmetry

Answer 7

so compare you equation with this form
h = ?

Answer 8

4?

Answer 9

not quite
-h = +4
so h = -4

axis of symmetry is x = -4

Answer 10

okay thanks

Answer 11

yw

Answer 12

do you follow the logic ok?