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Maths Puzzle
Numerical Ability
21x(squared) -17x + 2
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Solve using the quadratic formula. Show all the steps,otherwise no credit: 2x2 -8x -3 = 0. Please help me with this problem. I have no idea how to do it. Thank you.
The two digits in Jack's age are the same as the digits in Bill's age, but in reverse order. In five years Jack will be twice as old as Bill will be then. What is the difference in