When solving the equation x^2-8x-7=0 by completing the square which equation is a step in the process

The step required to solve the given equation by completing the squares is required.

The required step is

The equation is

Here

Adding the above expression to the equation on both sides

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Step-by-step explanation:

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answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204