I don’t know what the equation is but when using elimination you should cancel out opposite numbers such as 4x and negative 4x
Answer: number 3, 35
Step-by-step explanation: i promise
Converting to vertex form is actually pretty simple so I think you might find something to help you out here. :)
https://mathbitsnotebook.com/Algebra1/Quadratics/QDVertexForm.html
Answer: .0023847376
Step-by-step explanation: