# Maths

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#1
Sorry for the whole load of questions lately but how would you factorise x^3+x+10 I know the answer is (x+2)(x^2-2x+5) butwhat would the steps be to get the answer. Thank you in advance
0
2 years ago
#2
you do factor theorem, basically the number -2 can be substituted into x^3+x+10 to give 0. then you can do algebraic long division and factorise the quotient
0
2 years ago
#3
(Original post by _Catra_)
Sorry for the whole load of questions lately but how would you factorise x^3+x+10 I know the answer is (x+2)(x^2-2x+5) butwhat would the steps be to get the answer. Thank you in advance
As above. Once you know is a factor, its basic division from there.

A shortcut would be to generate the term in the cubic as below:

.
0
2 years ago
#4
(Original post by RDKGames)
As above. Once you know is a factor, its basic division from there.

A shortcut would be to generate the term in the cubic as below:

.
wow, never seen that method before
1
#5
(Original post by lhabgabdgbfa)
you do factor theorem, basically the number -2 can be substituted into x^3+x+10 to give 0. then you can do algebraic long division and factorise the quotient
(Original post by RDKGames)
As above. Once you know is a factor, its basic division from there.

A shortcut would be to generate the term in the cubic as below:

.
Thank you to both of you
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