exam Maths Puzzle Numerical Ability

x+2/x/x-2/3x

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exam Other Question

Simplify rational expressions

y^5-3y^3+8y^2 divided by 5y = y^4/5 -3y^2/5 + 8y/5
1. If a line is horizontal, what is true of any line that is perpendicular to it?

2.What is wrong with the statement "The line has no slope"?