Preview question: Write the quadratic function in vertex form.y = x2 + 4x

Behaviour being used: Adaptive mode

Minimum fraction: 0

Question summary: Write the quadratic function in vertex form. y = x2 + 4x: y = (x - 2)2 + 2; y = (x + 2)2 - 4; y = (x + 4)2 - 16; y = (x - 4)2 + 4

Right answer summary: y = (x + 2)2 - 4

Question state: todo