Algebra hjeelp??[A]
Posted: 28/11-2006 20:17
kan noen hjelpe meg med 5a(2a-1)(a-1)-9(a+1)^2 ?? 
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[/code][tex]5a(2a-1)(a-1)-9(a+1)^2[/tex]
[tex]5a(2a-1)(a-1)-9(a+1)(a+1)[/tex]
[tex]5a(2a^2-2a-a+1)-9(a^2+a+a+1)[/tex]
[tex]5a(2a^2-3a+1)-9(a^2+2a+1)[/tex]
[tex]10a^3-15a^2+5a-(9a^2+18a+9)[/tex]
[tex]10a^3-15a^2+5a-9a^2-18a-9[/tex]
[tex]10a^3-24a^2-13a-9[/tex]