exam Maths Puzzle Numerical Ability

Problem#18
Multiply the following fractions.
(2x^2-x-3)/(3x^2+7x+4) times (3x^2-11x-20)/(4x^2-9)

Problem#38
Divide the following fractions.

(2m^2-5m-7)/(4m^2-9) divided by

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exam Other Question

graph the equation 4x+y>_4 (4x+y is greater than or equal to 4) The length of a rectangular playing field is 5 feet less than twice its width. If the perimeter of the playing field is 230 feet, find the length and width of the field.

Let W = the width of the rectangle and L=length