Mathematics
Senior High
三題都不會
四
2th Cat
、計算題:每題10分,共20分
1.已知x>0且x+x'=3,試求下列各式的值:
(1)x-x15
(2)x3+x3018
0180
1
1
2
(3)x² + x 嗎
【解】
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