分配法則を使って,次の式を展開しなさい。 |
1 |
(8x+6)÷2 = 4x+3
|
2 |
(3x−9)÷3 = x−3
|
3 |
(6x+12y)÷3 = 2x+4y
|
4 |
(25x−15y)÷5 = 5x−3y
|
5 |
(12a+18b)÷6 = 2a+3b
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6 |
(4a−20b)÷4 = a−5b
|
7 |
(27a−18)÷3 = 9a−6
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8 |
(6x−4)÷(−2) = −3x+2
|
9 |
(x3+x2)÷x = x2+x
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10 |
(4y2−8y)÷2y = 2y−4
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11 |
(8x2+28x)÷4x = 2x+7
|
12 |
(6x2−3x)÷(−3x) = −2x+1
|
13 |
(2x+8y+10)÷2 = x+4y+5
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14 |
(9x2−12x−15)÷3 = 3x2−4x−5
|
15 |
(5x2+15xy−10x)÷5x = x+3y−2
|
16 |
(x2y−xy2)÷xy = x−y
|
17 |
(3ax+9ay)÷3a = x+3y
|
18 |
(−6xy+15y2−12y)÷(−3y)
= 2x−5y+4
|
19 |
(3a2+ab)÷ |
|
a |
= (3a2+ab)× |
2 |
a |
= 6a+2b |
20 |
(2ab−10ab2)÷ |
|
a |
=(2ab−10ab2)× |
3 |
2a |
= 3b−15b2 |