exam Maths Puzzle Numerical Ability

If f(x)=x(x-1)(x-4)^2, use the interval notation to give all values of x where
f(x)>0.

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Could you please show me how this problem would look on paper?
9t<= -8.1 My homework says to solve.Then graph

I can do some of the simple ones like: y-9>-18 THANK YOU SCOTT!!