Hey guys, I was wondering if someone can help me through a step by step guide on writing in vertex form.
I have this equation: -2x^2+6x+1
On this equation I factored out the 2 leaving me with: 2(x^2+3x)+1
Then I did (3/2)^2 and came out with 9/4.
At this point the book lost me, I can't seem to find out what to do next after finding that.
On perfect squares I don't even know how to find the value of k.
I have this equation: x^2-kx+100=0
I think I would have to subtract 100 from both sides, but I'm not sure.
Thanks for your help!