exam Maths Puzzle Numerical Ability

how can we find the inequality and absolute value for the following equation?
x^2+8x+12=0

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exam Other Question

A rectangular field is three times as long as it is wide and it is enclosed by a fence x feet in length. What is the areas of the field, in terms of x? i need some help figuring out this problem. is there any one that can please help me? any help will be greatly appreciated. The sum of 3 consecutive integers is -9. what are the integers? thanks