2021_F2_Maths_CH2 恆等式

2021_F2_Maths_CH2 恆等式

Assessment

Flashcard

Mathematics

7th - 8th Grade

Hard

Created by

陳恒垣Chan Wun

FREE Resource

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20 questions

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1.

FLASHCARD QUESTION

Front

展開 (x-2y)(x+2y)。

Back

x2-4y2

2.

FLASHCARD QUESTION

Front

展開 (4x-y)(4x+y)。

Back

16x2- y2

3.

FLASHCARD QUESTION

Front

展開 2 (x-y)(x+y)。

Back

2x2-2y2

4.

FLASHCARD QUESTION

Front

(x+4)(3x-1) = Ax2 + Bx - 4

Back

A= 3 , B=11

5.

FLASHCARD QUESTION

Front

(2x-5)(x-4)-3x = 2x2 +Ax- B為恆等式,計算A及B的值。

Back

A = -16 , B= -20

6.

FLASHCARD QUESTION

Front

展開(3x-7)2

Back

9x2-42x +49

7.

FLASHCARD QUESTION

Front

利用完全平方的恆等式,展開 (2x-5y)2

Back

4x2-20xy+25y2

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