exam Maths Puzzle Numerical Ability

Please help solve this equation: 25x^3 - 10x + 1

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exam Other Question

One number if less than 10 times another. If the sum of the number is 36, what are the 2 numbers? a motorboat covers a certain downstream in a river in 5 hours. it cover the same distance upstream in 5 hours and a half. the speed of water is 1.5 km. find the speed of the boat in still water.