I cant solve this, and need some quick help.

4*pi*X+2000/x^2=0

Thanks in advance :)

How do I simplify these two?

2X(1000/x2+2x)

2(x+2)(1000/x2+2x)

Printable View

- Apr 17th 2008, 11:49 PMdipsy34Quick help needed
I cant solve this, and need some quick help.

4*pi*X+2000/x^2=0

Thanks in advance :)

How do I simplify these two?

2X(1000/x2+2x)

2(x+2)(1000/x2+2x) - Apr 17th 2008, 11:59 PMCaptainBlack
Solve:

$\displaystyle 4 \pi x+2000/x^2=0$

multiply through by $\displaystyle x^2$:

$\displaystyle 4 \pi x^3+2000=0$

rearrange:

$\displaystyle x^3=-~\frac{500}{\pi}$

and you should be able to take it from there.

(for the others first multiply out the brackets)

RonL