HELP ME ANSWER THIS.CAN YOU?

Heather is writing a quadratic function that represents a parabola that touches but does not cross the x-axis at x = -6. which function could heather be writing? fx) = x2 + 36x + 12 = x2 - 36x - 12 f(x) = -x + 12x + 36 f(x) = -x? - 12x - 36

State one method by which you can recognize a perfect square trinomial.

What is the point of inflection for the function f(x)=2cos4x on the interval (0, pi/2)