Answer:
Explanation:
Given,y=x^3-3x^2-4x
taking x commonly
y=x(x^2-3x-4)
y=x(x^2+x-4x-4)
y=x[x(x+1)-4(x+1)]
y=x(x+1)(x-4)
Answer: y = x(x+1)(x-4)
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