book Maths Puzzle Numerical Ability

The sign of the sum of two negative numbers is,...

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book Other Question

The Set of numbers A={2,3,4,5} and an operations called *. Results for * are given below

* 2 3 4 5
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2| 3 2 3 4
3| 2 3 4 5
4| 3
factor the polynomial completely, given that the binomial followin it is a factor of the polynomial


t^2+1=13/6t