factor 5x4 - 30x2 - 135.
5(x2 + 9)(x2 - 3)
5(x - 3)(x + 3)(x2 - 3)
5(x - 3)(x + 3)(x2 + 3)

step-by-step explanation:

your mom

1.true 2.false? ? i think. .

step-by-step explanation:

1010: 3030

is it i think

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