Express the function f(x)=-5x^2+20x+2 in vertex form C)State the maximum or minimum value of the function D)State the equation of the axis of symmetry Please help me with this question step by step

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      f(x) = -5x^2 + 20x +2--> f(x) = -5(x^2 + 4x) +2--> f(x) = -5(x^2 + 4x + 4) +2 + 20  (to add 4 on the inside, we have to add 20 on the outside to counteract the -5*4 = -20)--> f(x) = -5(x +2)^2 + 22C) Maximum Value is k, or 22 (it's a downward sloping parabola).D) Axis of symmetry is x = h, or x = -2E) Increasing to the vertex, or (-inf, -2), decreasing after, (-2, inf)F) Use the quadratic formula on the original equation to find the zeroes.Once you have the equation in vertex form, it's simple to pull out the numbers you need to solve these questions.