合并同类项综合练习题40.docx
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合并同类项综合练习题40.docx
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合并同类项综合练习题40
8f+5f-8f2x-9c-3x+9c
8m+5n-16m+18n+15m-13n8xy-15xy-13xy-xy
23a2b-5b2c+30a2b-9b2c4z+2z2-6z+6z2-1
1975
—m-—n-—n-—m8z2-8ab+2z2+1
2828
1
—pq+3n+2pq5xy+18x2y+18xy-9xy
8
6d-7d+5d10y-5f+2y-4f
2a-4d+17a-11d-20a+16d7mn-4mn+14mn+mn
4x2y+9b2c+29x2y-2b2c8n-6n2-3n+20n2-8
4775
—z-—n-—n+—z15z2-9pq+3z2+3
5656
1
—xy-4y-7xy8pq-16a2b+10pq+16pq
3
5f+5f-9f5z+8b-2z+7b
5a+4d-4a-12d-16a-16d6mn+16mn+16mn+mn
7a2b-2y2z-21a2b+9y2z2n+2n2+5n+3n2+2
1975
—m+—t+—t-—m16t2-5pq+9t2-8
4848
4
—pq+4n-7pq4ab-10a2b+12ab+6ab
5
4f-6f+6f5m-9a-4m+9a
7b-6d+13b+3d-18b-20d6mn-6mn-18mn-mn
11a2b+8y2z-5a2b-7y2z4x+9x2+6x+15x2-5
3175
—z+—t-—t+—z19n2+6pq-5n2+1
2828
1
—ab-8n+9ab3pq+3x2y-15pq-29pq
8
4d-8d-7d2n-2d-8n-7d
3a+5d-6a+13d+16a-20d4ab-15ab-15ab+ab
25x2y-2b2c+22x2y+5b2c8n-5n2+7n+2n2-9
4175
—m+—t+—t-—m20z2+9mn+6z2-7
3838
1
—xy-2x-5xy8pq+9a2b-18pq+24pq
4
9b+7b-2b9m-5b-6m+10b
8a+4d-18a-11d+20a-13d5ab-10ab-16ab-ab
7a2b+7y2z-10a2b-8y2z8z-9z2+4z-10z2+2
1975
—m-—n+—n-—m17x2-9mn-8x2+7
3838
7
—pq-3z-6pq9mn-2x2y-7mn-26mn
6
4e+2e-7e10m+5a+3m+4a
7m-8d+16m+13d+12m+12d7ab-8ab-13ab-ab
7x2y-4y2z+28x2y-5y2z3x-5x2-7x-13x2+7
1975
—m-—t-—t-—m13t2+5xy-8t2+8
4848
3
—ab-7z+7ab8pq-17x2y+14pq+16pq
2
4d+5d+8d2x+7e-9x+10e
9m+7n+8m-11n+18m+12n2mn-13mn+15mn+mn
12a2b-4b2c+12a2b+4b2c3n-4n2-9n-9n2-7
4175
—m-—y+—y+—m14x2-8xy-9x2-9
5757
1
—pq+5x-6pq3pq-13x2y-19pq+25pq
7
2b-8b-2b4y-8c+5y-2c
6a+6c-17a+19c+11a-16c4pq+13pq+11pq+pq
21a2b-2b2c+24a2b-4b2c4n+8n2-8n-3n2+5
4775
—z+—n-—n-—z2z2-6xy+8z2+6
3838
1
—pq+7z+6pq3ab-2x2y-7ab+14ab
3
9f+4f+9f7x+4b-9x-9b
5m-3d-16m+7d-17m+13d7ab-6ab+14ab-ab
19a2b-4y2z-14a2b+4y2z8m-2m2-3m+20m2-1
1175
—z-—y-—y+—z7y2-7xy+5y2-7
2828
6
—ab-4x+8ab3mn+13x2y+4mn+21mn
5
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