(6)平方型の展開(解答) | 学習日 月 日( ) | |||||
|
乗法公式を使って,次の式を展開しなさい。 | |||
1 | (x+2)2 = x2+4x+4 |
2 | (x−5)2 = x2−10x+25 |
3 | (x+4)2 = x2+8x+16 |
4 | (x−6)2 = x2−12x+36 |
5 | (x+1)2 = x2+2x+1 |
6 | (x−8)2 = x2−16x+64 |
7 | (x+3)2 = x2+6x+9 |
8 | (x−9)2 = x2−18x+81 |
9 | (x+7)2 = x2+14x+49 |
10 | (x−)2 = x2−x+ |
11 | (a+0.2)2 = a2+0.4a+0.04 |
12 | (y−10)2 = y2−20y+100 |
13 | (x+y)2 = x2+2xy+y2 |
14 | (x−2y)2 = x2−4xy+4y2 |
15 | (a+3b)2 = a2+6ab+9b2 |
16 | (a−6b)2 = a2−12ab+36b2 |
17 | (2x−1)2 = (2x)2−2(2x)+1 = 4x2−4x+1 |
18 | (3x+y)2 = (3x)2−2(3x)y+y2 = 9x2+6xy+y2 |
19 | (5−x)2 = 52−2・5・x+x2 =25−10x+x2= x2−10x+25 |
20 | (2x+7y)2 = (2x)2+2(2x)・(7y)+(7y)2 = 4x2+28xy+49y2 |
[トップに戻る] [問題に戻る] |