help pls math
how do i factorise 6x^3+13x^2-4 ? so far i know x+2 is one of the factors. what do i do next ?
oh and i need to use short division
April 26, 2015
help pls math
how do i factorise 6x^3+13x^2-4 ? so far i know x+2 is one of the factors. what do i do next ?
oh and i need to use short division
11 Comments • Newest first
Okay, now I'm a bit curious and want to make sure of this so.. OP what grade are you currently in?
@Defaulty: Canada.
@Shir: what country do you live in?
[quote=Defaulty]look at all these 7th graders asking for math help on basil[/quote]
mfw I learned this in gr 12 math.
fr tho i see a math question thread every day
Anyway the answer is supposed to be (x+2)(3x+2)(2x-1) , you use long division to divide 6x^3+13x^2-4 by x+2 then you factorise your answer the normal way and just put (x+2) next to your final answer
Polynomial long division.
[quote=RoyaIBIue]Did they give in the question that x+2 is a factor?[/quote]
i worked it out using the factor theorem thingo.
Did they give in the question that x+2 is a factor?
[quote=Defaulty]look at all these 7th graders asking for math help on basil[/quote]
sozerrino
Use synthetic division
2(x+2)(3x+2)(x-1/2)
Or (x+2)(3x+2)(2x-1)=0
look at all these 7th graders asking for math help on basil