**Guide :High School **

# write "P (x) = -36x^2 + 900x

Write "P (x) = -36x^2 + 900x - 1584" in standard vertex form, help please!**y = a(x – h)2 + k, where (h, k) is the vertex;in our case, P(x) = a Δ/4a ;a = -36; b = 900; c = -1584;b/2a = 900/-72 = -12.5;Δ = 4ac = 810000 - 144*1584 = 581904 => -Δ/4a = 4041;P(x) = (-36)(x - 12.5)^2 + 4041, where (12.5 , 4041) is the vertex;**...