please help me in this question
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x³ - 3x² - 9x - 5
= x³ - 5x² + 2x² - 10x + x - 5
= x²(x - 5) + 2x(x - 5) + 1(x - 5)
= (x - 5)(x² + 2x + 1)
= (x - 5)(x² + x + x + 1)
= (x - 5){x(x+1)+1(x+1)}
= (x - 5)(x+1)(x+1).
tushar0007:
Use factor theorem...
Check for zero of the polynomial and get at least one factor... and then divide the polynomial by the factor..... and factorise it further if required.
Okay... I am answering your other question in this way...
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