Is someone able to help quickly!?

Explanation:

Squaring 3 leads to 9. The same applies to -3 as well because . The two negatives cancel out.  This is why the solutions to are -3 and 3. That rules out choice B.

Choices C and D can be ruled out because . We end up with a negative result which contradicts the positive value on the right hand side of the original equation. Sure x = 3 works, but x = -3 does not.

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

6mm^3 or .6cm^3

      216

      /   \

  36     6

  /   \     /

6     6   6

factor trees are nice.