solve the following factorisation by division method :1.x³-2x²-x+2
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Answer:
−2x2−x+2
= x^{2} (x-2) -1(x-2)=x2(x−2)−1(x−2)
= (x-2)( x^{2} -1)=(x−2)(x2−1)
= (x-2)(x+1)(x-1)=(x−2)(x+1)(x−1)
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