exam Maths Puzzle Numerical Ability

What values for x must be excluded in the following fraction?
x+2/x^2-9x+14

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exam Other Question

The angle of elevation from the tip of the shadow of a 12-foot pole to the top of the pole is 60 deg. How far is it from the tip of the shadow to the top of the pole . Round to the nearest tenth of a foot the sum of a two digit number is 10. if 18 be subtracted from it, the digits in the resulting number will be equal. the number is???