The graohg of the funcation f(x)=ax^2+bx+c has vertex at (1,4) and passes(-1,-8). Find a,b, and c

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A: let x and y be two numbers whose sum is 70   we have to maximize  M=xy where x+y=70

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A: Thanks for the question :)And your upvote will be really appreciable ;)

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A: if you specifically asking to how to find maximum and minimum value. Please refer to the image below…

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A: We are given the following system of 2d Linear equations : -3x1 + x2 ≤ -2 -x1 + x2 ≤ 2 -x1 + 2x2 ≤ 8…