These are start to get way to hard now.
Need help on these.
The answers all ready there are 'given.'
I need help with these, I'm a Senior who is failing in Math. I wanna Grad on time.
These are all sums or differences of cubes:
. . . . .$\displaystyle x^3\, +\, \frac{1}{8}\, =\, (x)^3\, +\, \left(\frac{1}{2}\right)^3$
. . . . .$\displaystyle a^{3y}\, +\, 1\, =\, \left(a^y\right)^3\, +\, (1)^3$
. . . . .$\displaystyle \frac{1}{8}x^3\, -\, \frac{1}{27}y^3\, =\, \left(\frac{1}{2}x\right)^3\, -\, \left(\frac{1}{3}y\right)^3$
To learn how to do the factorizations, try studying a lesson on special factoring formulas.
Then memorize the two "cubes" formulas!!