Q. 19.Factorise.
xº3+13x°2+32x+20
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Answered by
5
Answer:
33x+29...................
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1
x³+13x²+32x+20
= x³ + x² + 12x² + 12x + 20x + 20
= (x+1)(x²+12x+20)
= (x+1)(x+2)(x+10)
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