exam Maths Puzzle Numerical Ability



Solve 81x^3+36x^2=-4x

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Part A. Find the equation of the line joining the points A(-3,-5) and B(2,7).
Part B. Find the equation of the line perpendicular to the line in part (A) above and pa
express the following ratio having the same units in the numerator and denominator: 1 1/2 hours to 50 minutes. Please help