Respuesta :

devin258

[tex]x {}^{2}(2x + 7) - (2x + 7) \\ (2x + 7)(x {}^{2} - 1) \\ (2x + 7)(x - 1)(x + 1)[/tex]
wegnerkolmp2741o

2n^(3)+7n^(2)-2n-7

factor by grouping

2n^3 -2n  + 7n^2-7

2n(n^2-1) + (7(n^2-1)

factor n^2-1 out

(n^2-1) (2n+7)

factor (n^2-1)

(n-1) (n+1) (2n+7)

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