20220415_2次方程式-因数分解利用

20220415_2次方程式-因数分解利用

9th Grade

8 Qs

quiz-placeholder

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20220415_2次方程式-因数分解利用

20220415_2次方程式-因数分解利用

Assessment

Quiz

Mathematics

9th Grade

Practice Problem

Hard

Created by

Takayuki Yokoi

Used 4+ times

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8 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

① x2-5x-14=0

x=2,7

x=2,-7

x=-2,7

x=-2,-7

解なし

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

② x2+9x+20=0

x=4,5

x=4,-5

x=-4,5

x=-4,-5

解なし

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

③ x2=x+72

x=8,9

x=8,-9

x=-8,9

x=-8,-9

解なし

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

④ x^2-121=0

x=11

x=-11

x=±11

x=±121

解なし

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

⑤ x2+18x+81=0

x=9

x=-9

x=±9

x=0,9

その他

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

⑥ 4x2-4x+1=0

x=2

x=-2

x=1/2

x=-1/2

その他

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

⑦ x2+2x=0

x=2

x=-2

x=±2

解なし

その他

8.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

⑧ 3x2-8x+4=0

x=2,2/3

x=2,3/2

x=1/2,2/3

x=1/2,3/2

その他