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5. 若多項式(a-3)x2+(b+1)x+c-2是一個零多項式,則a、b、c三個數的條件為何?(A)a=3,b=1,c=2 (B) a≠3,b=1,c=2(C) a=3,b=-1,c=2 (D) a
問題詳情
5. 若多項式(a-3)x2+(b+1)x+c-2是一個零多項式,則a、b、c三個數的條件為何?
(A)a=3,b=1,c=2
(B) a≠3,b=1,c=2
(C) a=3,b=-1,c=2
(D) a=3,b=-1,c=-2
參考答案
答案:C
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英數姬2.0
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所謂「零多項式」,指的是沒有任何xn、x☆-...
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4. 下列何者正確?(A) 7<√56<8 (B) 7<√48<8 (C) 7<√27<8 (D) 7<√15<8。
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6.一個x的二次多項式與x的三次多項式,相減後的結果為x的n次多項式,則n=?(A)-1 (B)1 (C)3 (D)無法確定
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