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4.有兩個數B、G,若B×G=0,則B=0或G=0。(A)O(B)X
問題詳情
4.有兩個數B、G,若B×G=0,則B=0或G=0。
(A)O
(B)X
參考答案
答案:A
難度:
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今天沒有下雨
】評論
若2數相乘為0,則其中必有一數為0
上一篇 :
3.將x2+5x+4分解成(x+1)(x+4)的過程稱為因式分解。(A)O(B)X
下一篇 :
1.下列四個式子展開化簡後都是x2+4x+3,何者是它的因式分解?(A) x(x+4)+3 (B) (x+2)2-1 (C) (x+3)(x+1) (D) x(x+3)+(x+3)
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2.若(m-2)x2+(m-5)x+3=0是x的一元二次方程式,則m的條件為何?(A) m=2 (B)m≠2 (C) m≠5 (D)m≠0
3.若x2+6x+a2=(x+a)2,則a=?(A)3 (B)6 (C)9 (D)-3
4.將(x-4)(2x+3)=6乘開化簡後,可得下列何式?(A)2x2-5x-18=0 (B)2x2-11x-18=0 (C)2x2-5x+6=0 (D)2x2-11x-6=0
5.利用配方法解方程式時,得到一根為x=-7+152,那麼另一根必為何? (A)x= (B)x= (C)x= (D)x=
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【題組】2. In which city will it rain during the vacation?(A) Taipei (B) Taichung (C) Tainan (D) Kaohsi
【題組】3. Which is ?(A) When they come back to Taipei, they don’t need to worry about rainy days.(B) Th
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