book Maths Puzzle Numerical Ability

Can someone please help find the LCM
(x-1)^3(x+1); (x-1)(x+1);(x-1)^2(x+1)^2

Thanks for your help.

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book Other Question

directions: find all the roots of each equation.

2x^3+3x^2-6x-9=0
(5/x)+(9/9x)=3