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복 습

인수분해의 공식 1. 복 습. X 2 + ( a+ b )x + a b. a 2 - 2 a b + b 2. a 2 - b 2. a 2 + 2 a b + b 2. = ( a + b ) 2. ac X 2 + ( a d + b c ) x + bd. = ( a + b ). =( a x + b ). = ( a + b ) 2. = ( a - b ) 2. 2). 1). 5). 4). 3). 제곱. 제곱. 제곱. 이차항의 계수가 1 이 아닌 식.

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복 습

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  1. 인수분해의 공식1 복 습 X2 +(a+b)x +ab a2 -2ab + b2 a2 - b2 a2 + 2ab + b2 = (a+b)2 acX2 +(ad+bc)x+bd = ( a+b) =( ax+b) = ( a+b)2 = ( a-b)2 2) 1) 5) 4) 3) 제곱 제곱 제곱 이차항의 계수가 1이아닌 식 이차항의 계수가 1인 식 제곱 제곱 제곱 곱의2배 곱의2배 ( a-b) ( cx+d )

  2. 복 습 인수분해 공식 를 이용한 수의 계산 예242222 =(24-22)(24+22) =2 46=92

  3. 학습목표 인수분해의 공식을 활용하여 식의 계산을 할 수 있다.

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