book Maths Puzzle Numerical Ability

graph {x/x<1}

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how do u factor this out..having trouble: x^3 + 8y^3 Solve for x: 7x/x-2 + 2x/x+2 =9 I thought you would use (x-2)(X+2) as your LCD, But I can't seem to come up with an answer after I do that. I keep coming up with 7x+2x=9(x-2)(X+