(3)多項式の加法(解答) | 学習日 月 日( ) | ||||||||
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次の計算をしなさい。 | |||||||||
1 | (3x+2)+(5x+1) = 3x+5x+2+1 = 8x+3 |
2 | (4x+3)+(2x−1) = 4x+2x+3−1 = 6x+2 |
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3 | (4x−1)+(x+5) = 4x+x−1+5 = 5x+4 |
4 | (7x−3)+(3x−6) = 7x+3x−3−6 = 10x−9 |
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5 | (2x+4)+(7x−3) = 2x+7x+4−3 = 9x+1 |
6 | (x+2)+(8x+9) = x+8x+2+9 = 9x+11 |
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7 | (5x+8)+(−3x−8)= 5x−3x+8−8 = 2x |
8 | (6x−5)+(2x+3) = 6x+2x−5+3 = 8x−2 |
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9 | (2x+7)+(−4x+1) = 2x−4x+7+1 = −2x+8 |
10 | (3x−4)+(4x−3) = 3x+4x−4−3 = 7x−7 |
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11 | (8a−3)+(2a+1) = 8a+2a−3+1 = 10a−2 |
12 | (5y+2)+(5y−7) = 5y+5y+2−7 = 10y−5 |
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13 | (x−5y)+(4x−3y)= x+4x−5y−3y = 5x−8y |
14 | (3x+2y+4)+(x−3y−1) = 3x+x+2y−3y+4−1 = 4x−y+3 |
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15 | (5x2−3x+1)+(5x2+3x−2) = 5x2+5x2−3x+3x+1−2 = 10x2−1 |
16 | (a2+ab+3b2)+(−a2+ab−2b2) = a2−a2+ab+ab+3b2−2b2 = 2ab+b2 |
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