CBSE Class 9 Answered
factorise polynomial
Asked by | 12 May, 2008, 11:06: AM
Expert Answer
Let x3 -3x2 - 9x - 5 = 0
If we put x = -1 it satisfies the equation as we get 0. Which means (x + 1) is one of the factors of the given equation.
Now if we divide the given equation by (x + 1) we get (x2 - 4x - 5) So the given equation becomes :
= (x + 1) (x2 - 4x - 5)
= (x + 1) (x - 5) (x + 1)
= (x - 5) (x + 1)2
Answered by | 13 May, 2008, 12:36: AM
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