emilylewis16
emilylewis16 emilylewis16
  • 23-11-2016
  • Mathematics
contestada

How do i factorise
15x - 10x^3
and
9x^2 + 3x^3 ?

Respuesta :

bartdrinksmalk
bartdrinksmalk bartdrinksmalk
  • 23-11-2016
[tex]15x-10x^{3}[/tex] has common factor [tex]5x[/tex]
which gives
[tex]5x(3-2x^{2})[/tex]

[tex]9x^{2}+3x^{3}[/tex] has common factor [tex]3x^{2}[/tex]
which gives
[tex]3x^{2}(3+x)[/tex]
Answer Link
claireroche1
claireroche1 claireroche1
  • 23-11-2016
You find the highest common factor, in the first one this is 5x
5x(3-2x^2)
For the second it's 3x
3x(3x+x^2)
Answer Link

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