exam Maths Puzzle Numerical Ability

find all possible zeros in the equation.......x^3 - 27x -54

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I think this is the right section. My father in law is trying to help someone with their homework and called me. My algebra memory has faded :)

solve for x

x=zb-zk^2 (or, in english, x equals zb minus zk squared) Could someone please explain this problem: graph the line that passes through the point (3, -2) that has a slope of 4/3. Thanks