I'm confused please an do have 4 other ones that I dont understand first to answer with correct answer will get marked brainliest

triangles are the same as squares except half of it

8x4/2.

32/2 = 16

16²

i belive those are the ones that are under 90 degreese.

the image is given below

since the options are not given so we draw it from the equation

the given equation is

y = (x-1) (x+4)

y = y² + 3x - 4

the above equation is a quadratic equation which will have two roots. if we draw the graph for it, it will look like this