Multiply? i don't know how to do this o. o

(x+4√2) (x-4√2) (x-3i)

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Step-by-step explanation:

Notice that the first two factors are in the form , which is equal to . Start by combining and expanding these two factors:

Let .

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This expression can now be expressed as . stands the unit imaginary number, where . Unless is raised to a certain power other than , it can be treated just like a constant.

Expand this expression using FOIL:

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it has changed from the width and the height.

step-by-step explanation:

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