exam Maths Puzzle Numerical Ability

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???

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exam Other Question

What values for x must be excluded in the following fraction?
x+2/x^2-9x+14 i need help solving these quadratic equations using the quadratic formula.
2x^2 - 5x = 3

3x^2 - 2x + 1 = 0