furtherlisk furtherlisk
  • 16-11-2020
  • Mathematics
contestada

Explain how to use a polynomial identity to factor x^6-27y^3

Respuesta :

LammettHash
LammettHash LammettHash
  • 16-11-2020

This is a sum of cubes:

x⁶ - 27y³ = (x²)³ + (-3y)³

Recall that

a³ + b³ = (a + b) (a² - ab + b²)

So we have

x⁶ - 27y³ = (x² - 3y) ((x²)² - x² (-3y) + (-3y)²)

x⁶ - 27y³ = (x² - 3y) (x⁴ + 3x²y + 9y²)

Answer Link
jayfrostman jayfrostman
  • 16-11-2020
Dont really no sorry
Answer Link

Otras preguntas

HELP * PICTURE INSERTED*
WILL GIVE BRAINLIEST (4x - 5) m (7x - 17)m (2x + 3) m The perimeter of this triangle is m.
Please help me solve -8(-3d-2)
How does Soontornvat portray Tham Luang cave as both dangerous and wondrous?
give me compound and complex sentence about health​
explain how electricity can be conducted by acids and bases
i) Factorise x^2 - x - 20​
- 2x + 4y = 17 3x - 10y = -3
12(6x + 10) + x = 9x + 5(1 – x) can u solve this?
Which expression is equivalent to 4/5+1 1/5