using factor theorum factorise : y^3-2y^2-29y-42 – InterviewSolution

1.	using factor theorum factorise : y^3-2y^2-29y-42
Answer» -2 is a visible roott^2+4t-21=t^2+7t-3t-21=(t-3)(t+7)thus 3 roots are -2 , 3 , -7(x+2)(x-3)(x+7)

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