2021_F2_Maths_CH2 恆等式
Flashcard
•
Mathematics
•
7th - 8th Grade
•
Practice Problem
•
Hard
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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