Which of the following are identities? Check all that apply.

Image with options is above will mark brainliest!

Since the parabola is opening in vertical direction, this shows that the squared term is x.

The sign determines whether the opening is up or down. A negative sign shows a downward opening when the squared term is x.

So, look for the equation with negative coefficient and squared x term. Option A gives such an equation

So, the answer to this question is option A