If 5 + 20 times 2^2 minus 3x = 10 times 2^- 2x + 5, what is the value of x?
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Answer:
The vertex form of a quadratic function:
(h,k) - the coordinates of the vertex
If a>0, then the parabola opens upwards, so the vertex is the minimum of the function.
If a<0, then the parabola opens downwards, so the vertex is the maximum of the function.
