please help

Question

please help

anonymous · Answer

The way to do this is easy from what i've seen that you know how to do, you're a freaking genius afterall, so, first things first, factor that equation like you did on the last one i helped you with when you were finding the axis of symmetry

anonymous · Answer

Of course you are, but go ahead and complete the square for this one again, and make it look something like$$y=a(x-h)^2+k$$

anonymous · Answer

The problem is that it's neither of those, let me work step by step here so you can see where you went wrong

anonymous · Answer

$$3x^2-12x+3=3(x^2-4x)+3$$so from here we complete the square adding a 4 to the inside of the parenthesis, and we subtract a 3 that needs to be multiplied by that 3 on the outside of the parenthesis so we get$$3(x^2-4x+4)+3-12$$after simplifying and factoring the parenthesis, since now it's a perfect square we get$$y=3(x-2)^2-9$$

anonymous · Answer

Looking at the work you typed up, you took the derivative? if so you took the derivative of$$3x^2$$wrong, as it should have been 6x, not -6x

anonymous · Answer

Before your break lets finish this question haha, from that answer you know the vertex now right? it should be$$(h,k)$$as seen in the general formula, just match up the parts

anonymous · Answer

If you understand how to get the correct answer of c) then i hope you enjoy your break :) and i hope you have a wonderful night since it's getting quite late here for me (9pm) being late