Given the function f(x) = 3x +21x18, algebraically deter- mine the vertex, x-intercepts, and y-intercept. Its...

 

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Given the function f(x) = −3x² +21x18, algebraically deter- mine the vertex, x-intercepts, and y-intercept. Its vertex is Its x-intercepts are. Note: If there is more than one answer enter them separated by commas (i.e.: (1,2),(3,4)). Its y-intercept is. Given the function f(x) = −3x² +21x18, algebraically deter- mine the vertex, x-intercepts, and y-intercept. Its vertex is Its x-intercepts are. Note: If there is more than one answer enter them separated by commas (i.e.: (1,2),(3,4)). Its y-intercept is.