I'm doing rational expressions and am so confused.
4x^2-18x+81/8x^3+729
8x^3+729 is the sum of two cubes, so it is
(2x+9)((2x)^2-(2x)(9)+9^2)
= (2x+9)(4x^2-18x+81)
That help?
4x^2-18x+81/8x^3+729
(2x+9)((2x)^2-(2x)(9)+9^2)
= (2x+9)(4x^2-18x+81)
That help?