exam Maths Puzzle Numerical Ability

Can someone help me solve this quadtratic problem:

2x^2+7x+5

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exam Other Question

I have a question that states: use the even and odd powers of (x-c) Theorem to determine where the graph of the given polynomial will cross the x-axis and where the graph will intersect but not cross the x-axis. y=x(x-4)^2 In the period of a year, an investor lost twice as much as he gained. If he originally had $10,000 and now has $8000, what amount did he gain and what did he lose?