8x^3+ 1
(2x)³+1³
2x+1
X=1/2
How can i factorize this?
8x^3+1
2 answers
use A^3 + B^3 = (A+B)(A^2 - AB + B^2)
(memorize it)
We call it the sum of cubes,
we can also factor the difference of cubes.
8x^3 is a perfect cube and so is 1, so the expression fits the formula
8x^3+ 1
= (2x + 1)(4x^2 - 2x + 1)
(memorize it)
We call it the sum of cubes,
we can also factor the difference of cubes.
8x^3 is a perfect cube and so is 1, so the expression fits the formula
8x^3+ 1
= (2x + 1)(4x^2 - 2x + 1)
1 answer