book Maths Puzzle Numerical Ability

Please help me solve this problem ((( X2 = 25))) (the 2 is a little 2 like 2nd power

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book Other Question

A merchant purchased a jacket for $60 and then determined a selling price that equalled the purchase price of the jacket plus a markup that was 25 percent of the selling price. Du How do you write the following equation in standard form? y=x^2 + 2x - 15