angeltovar
angeltovar
13-12-2013
Mathematics
contestada
what is x3+3x2-x-3 factor by grouping
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tomek1172
tomek1172
13-12-2013
x3 + 3x2-x-3=0
x2(x+3)-(x+3)=0
(x2-1)(x+3)=0
x2-1=0
(x-1)(x+1)=0
x=1
x=-1
x+3=0
x=-3
Answer Link
D3xt3R
D3xt3R
13-12-2013
[tex]x^3+3x^2-x-3[/tex]
[tex]x^2(x+3)-x-3[/tex]
[tex]x^2(x+3)-(x+3)[/tex]
[tex]\boxed{\boxed{(x+3)(x^2-1)}}[/tex]
Answer Link
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