exam Maths Puzzle Numerical Ability

Solve

(by factoring) x 2nd power - 24 = -2x

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exam Other Question

how do I solve 4+ x<-2 This is the closest subject I could find, but the topic is Digit Problems. The question is: A two-digit number is four times the sum of its digits. The tens digit is 3 less then the units digit. What is the number?