Anumber cube with six sides is rolled seven times. the probability of getting a 4 exactly twice is?

Ineed me i stuck and i don’t want to get it wrong

In the diagram, points d and e are marked by drawing arcs of equal size centered at b such that the arcs intersect ba and bc. then, intersecting arcs of equal size are drawn centered at points d and e. point p is located at the intersection of these arcs. based on this construction, m , and m

Which equation is y = -6x2 + 3x + 2 rewritten in vertex form?