Find the vertex form of the quadratic function y=-x^2+4x+2.

Terry F. answered • 06/16/16

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The vertex is given by the formula -b/2a as in the quadratic formula. Here the formula yields -4/-2 = 2. then plug

x=2 to get y = 6. Graph the equation to see that the point (2,6) is the maximum.

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