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F.2 CH3 恆等式 Quiz

Authored by 蕭宇倫先生 Xiao Alan

Mathematics

6th - 8th Grade

Used 1+ times

F.2 CH3 恆等式 Quiz
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25 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

判斷下列各方程是否恆等式。

(x−3)(2x+1)=2x(x−2)−(x+3)\left(x-3\right)\left(2x+1\right)=2x\left(x-2\right)-\left(x+3\right)

是

否

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

判斷下列各方程是否恆等式。

3x(x+1)+5=(3x−5)(x−1)3x\left(x+1\right)+5=\left(3x-5\right)\left(x-1\right)

是

否

3.

FILL IN THE BLANKS QUESTION

1 min • 1 pt

若 (x−3)(x+4)≡x2+Px+Q\left(x-3\right)\left(x+4\right)\equiv x^2+Px+Q ,其中P和Q為常數,求P。

(a)  

4.

FILL IN THE BLANKS QUESTION

1 min • 1 pt

若 (x−3)(x+4)≡x2+Px+Q\left(x-3\right)\left(x+4\right)\equiv x^2+Px+Q ,其中P和Q為常數,求Q。

(a)  

5.

FILL IN THE BLANKS QUESTION

1 min • 1 pt

若 (3x−4)(x+A)−7≡x(3x+2)+B\left(3x-4\right)\left(x+A\right)-7\equiv x\left(3x+2\right)+B ,其中A和B為常數,求A。

(a)  

6.

FILL IN THE BLANKS QUESTION

1 min • 1 pt

若 (3x−4)(x+A)−7≡x(3x+2)+B\left(3x-4\right)\left(x+A\right)-7\equiv x\left(3x+2\right)+B ,其中A和B為常數,求B。

(a)  

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

展開下列各式。

(5+y)(5−y)\left(5+y\right)\left(5-y\right)

y2−25y^2-25

y2+25y^2+25

25−y225-y^2

y2+10y+25y^2+10y+25

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