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How to solve the questions of 20 12 Fujian Mathematics and Science Quality Inspection 10 and 15?
10 problem mapping, such as any quadratic function 123, can be easily eliminated. 4. Moving the left side to become a slope must be established according to the image.

The number axis of 15 question is inclusive and not inclusive, and the condition that P is greater than 1 seems unnecessary, which is probably the case.