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factor by grouping

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How do I factor by grouping: x^3 + 5x^2 + x +5
asked May 4, 2014 in ALGEBRA 1 by anonymous
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The polynomial  is x 3 + 5x 2 + x  + 5

= x 2 (x + 5) + 1 (x + 5)

Take  common out ( x + 5) from above expression.

 = (x + 5) (x 2 + 1 )

Factoring of  x 3 + 5x 2 + x  + 5 = (x + 5) (x 2 + 1 ).

answered May 5, 2014 by david Expert

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