Melody

It increases the area by x^2  Alan.

sorry

I was thinking it increases the area by x^2 units squared.

but

you have interpreted it as x units squared.

Your interpretion is probably the intended one.   

Good thinking Geno :)

Do you mean   $$25^2=625$$

or

$$5^2=25$$

x  can be anything because these are not equations.  There are no equal signs  

2/100*8,000,000,000

Are you the anon who asked the question?  What don't you understand?

$$-(\frac{-1}{2})^3\\\\
=-\frac{(-1)^3}{(2)^3}\\\\
=-\frac{-1}{8}\\\\
=\frac{1}{8}\\\\$$

Try looking through this

27/10/14

LOOKS INTERESTING

If you think about and understand this you will see that the cos(angle) is given by the x value on the unit circle.  2pi is one complete revolution.  The x value at 0 radians is 1

3pi=3pi-2pi=pi radians on the unit circle. The x value at pi on the unit circle is -1

I hope that helps.