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A quadratic of the form -2x^2 + bx + c has roots of x = 3 + sqrt(5) and x = 3 - sqrt(5). The graph of y = -2x^2 + bx + c is a parabola. Find the vertex of this parabola.

 Oct 6, 2020
 #1
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Already answered here:

 

https://web2.0calc.com/questions/help-on-algebra-thanks-d

 Oct 6, 2020
 #2
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stop cheating on AoPS hoemwork

 Oct 6, 2020

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