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Mathematics
Junior High
yin
yin

求解

3=10000 19. 已知坐標平面上有一直線L,其方程式為y+2=0,且L與二次函數y=3x²+a 的圖形相交於 A、B兩點;與二次函數y=-2x²+b的圖形相交於C、D兩點,其中a、b為整數且 y=3x²+a頂點為P,y=-2x²+b頂點為Q。 【107會考修改】 若 AB=2,CD=4,則PQCD的面積為_ 22
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