exam Maths Puzzle Numerical Ability

Perform the indicated operation and simplify:

((2x+2)/(x^2-2x-3)/(10x+10)/(x^2+2x+1))

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exam Other Question

a rectangular swimming pool is 2 m longer than it is wide.if the width is decreased by 3m, and the length is increased by 4m the area remains the same as the original area.find the original dimensions of the pool? if a 5 foot 6 person cast a 11 foot shadow and a nearby tree casts a 20 foot shadow how tall is the tree