Question

is
y=3x^2-4x+5
y=(x-2)^2-3
y=-2x^2-9
and y=-4(x-2)(x+3)
either a general form, vertex form, factor form or none of these? How can I tell?

Answer 1

General form is y=ax^2+bx+c

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

Answer 2

So the first one is a general and the second and last one is vertex

Answer 3

Also is there a way that I can convert the ones that aren't in general form into general form?

Answer 4

Last one isnt vertex form

Answer 5

Oh okay

Answer 6

y=-2x^2-9 is general form

y=-4(x-2)(x+3) is factored form

to get them into general form just multiply them out

Answer 7

So how would I do that exactly?????

Answer 8

for y=(x-2)^2-3

y=(x-2)(x-2)-3

foil it

y=x^2-4x+4-3

combine like terms

y=x^2-4x-1

Answer 9

hmm okay