factorise xcube + 5xsqare - 16x + 80

Asked by  | 24th Jul, 2008, 07:41: PM

Expert Answer:

The problem should be  x^3 - 5X^2 - 16X+80

                                            X^2 [ X - 5 ] - 16 [ X - 5]

                                             [ X-5 ]  [ X^2 - 16 ]

                                             [ X-5 ] [ X-4 ] [ X +4]

Answered by  | 25th Jul, 2008, 11:31: AM

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