exam Maths Puzzle Numerical Ability

Someone please help me!!!
The polynomial (2x+1)(x-2)(3x-4)is greater than zero for x (-infinity,-1/2)U(4/3,2)
Is this true or false?

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exam Other Question
find the equation of the line that is perpendicular to y= -3/5x+2 and passes through point ( -4,2) 4xsquared-25=