
(1)?5a+4b?3a?2b;
(2)5x2+3x?3x?2x2+1.
2.(23-24七年級(jí)上·河南信陽(yáng)·期中)化簡(jiǎn):
(1)?5m2+2?2m+6m2+3m?3;
(2)3?ab+2a?3a?b+3ab.
3.(23-24七年級(jí)上·江蘇常州·期中)化簡(jiǎn):
(1)3x+2y?(x+5y);
(2)43a2b?ab2?5?ab2+3a2b;
(3)2x2+x2?2xy+2y2?3x2?xy+2y2.
4.(23-24七年級(jí)上·天津·期中)化簡(jiǎn):
(1)5(3a2b?ab2)?3(ab2+5a2b);
(2)3x2?5x?12x?3+2x2.
5.(23-24七年級(jí)上·江西贛州·期中)化簡(jiǎn):
(1)3y2?2+4y2?7;
(2)22ab+3a?32a?ab.
6.(23-24七年級(jí)上·河南洛陽(yáng)·期中)化簡(jiǎn):
(1)4a2+23ab?2a2?7ab?1;
(2)3x2y?12xy2?124x2y?3xy2.
7.(23-24七年級(jí)上·江蘇鎮(zhèn)江·期中)化簡(jiǎn):
(1)x2?3xy2?12x2+5xy2;
(2)3(m2?2m?1)?(2m2?3m)+3.
8.(23-24七年級(jí)上·江蘇泰州·期中)化簡(jiǎn):
(1)?3a+7b+4a?2b;
(2)4y2?3y?(3?2y)+2y2.
9.(23-24七年級(jí)上·廣東廣州·期中)化簡(jiǎn):
(1)6m2n?3mn2?m2n+2mn2;
(2)x2?x?32x2+x?12.
10.(23-24七年級(jí)上·江西上饒·期中)化簡(jiǎn):
(1)?5m3n+4m2n?2mn+m2n+3mn;
(2)5a2+2a?1?43?8a+2a2.
11.(23-24七年級(jí)上·吉林長(zhǎng)春·期中)化簡(jiǎn):
(1)2a?6b?3a+4b;
(2)2m2?3m+4?32m?m2+1.
12.(23-24七年級(jí)上·江蘇無(wú)錫·期中)化簡(jiǎn):
(1)(x2?2x)?2(x2?3x+1)+2;
(2)3(m2n?2mn2)?4(?mn2+2m2n).
13.(23-24七年級(jí)上·吉林長(zhǎng)春·期中)化簡(jiǎn):
(1)6a?4b?7a?9b;
(2)43x2y?xy3?3?xy3+2x2y.
14.(23-24七年級(jí)上·黑龍江齊齊哈爾·期中)化簡(jiǎn):
(1)x3?2x2?x3+5x2+4;
(2)3a2?12a?2a2?a+1.
15.(23-24七年級(jí)上·遼寧丹東·期中)化簡(jiǎn):
(1)3x2y?3xy2?12xy2+23x2y;
(2)4a?2b+1?3?4a+b?5;
(3)4x2y+5xy?7x?124x2y+10xy?14x.
16.(23-24七年級(jí)上·江蘇連云港·期中)化簡(jiǎn):
(1)3a?b+a?3b;
(2)3x2?1?2x2?x?1;
(3)4mn?2m+24m?mn;
(4)?2x2+y2?3xy?2x2?y2.
17.(23-24七年級(jí)上·四川成都·期中)化簡(jiǎn):
(1)3x?2y?x?6y+2;
(2)2a2+1?2?3a2;
(3)3x2?2xy?2?3xy+y2;
(4)3m2n?2m2n?2mn?m2n?4m2.
18.(23-24七年級(jí)上·四川遂寧·期中)化簡(jiǎn):
(1)4x2+23xy?2x2?7xy?1;
(2)5ab2?2a2b?4ab2?2a2b+4a2b+1.
19.(23-24七年級(jí)上·河南開(kāi)封·期中)化簡(jiǎn):
(1)4?3a2?ab?25ab?8b2;
(2)236x2?3x2y?2xy+?2x2y+3x2?12xy2.
20.(23-24七年級(jí)上·廣西玉林·期中)化簡(jiǎn):
(1)4x2+3y2+2xy?4x2?4y2;
(2)?312x+y?2x?2x+13y2+?32x+13y2.
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