ããåææ°å¦100é¢
ãã(ä¸)å å¼å解ï¼
ããâ 3(x-a)-x(a-x) âx2-x
ããâ 4-12(a-b)+9(b-a)2 â3a3x-4b3y-4a3y+3b3x
ããâ1-x2+4xy-4y2
ãã
ãã(6) x(x+y+z)+yz (7) x2m+xm+
ãã(8) a2b2-a2-b2-4ab+1 (9) a2(x-y)2-2a(x-y)3+(x-y)4
ãã(10) 3a8-48b8 (11) x2+4y2+9z2-4xy-6xz+12yz
ãã12)-6ax3y+8x2y2-2x2y (13)3a2(x-y)3-4b2(y-x)2
ãã(14)(x+y)(m-a)-3y(a-m)2+(a-m)3 (15)8x(a-1)-4(1-a)
ãã(16)m(1-a)+mn(1-a)+1-a (17). 3ab-9ac+12ad
ãã(18). 25p3q3+15p2q3-5q3 (19). 0.81x2y2-1
ãã(20). 16a2b4-9a2c2 (21). 3a(m+n)-6(m+n)
ãã(22). (m-3n)(3m+4n)+(2m-6n)(m+3n) (23). m2(a-x)+n2(x-a)
ãã(24). 2a2(x-y)3-2ab4(y-x)2 (25). (a+b)3+(a-b)3
ãã(26). 9a6b3+1/3a3b6 (27).xm+3-xm
ãã(28). am+2-am-2 (29).(a+b)n+2-(a+b)n
ãã(30). 4a4_12a2b+9b2 (31). (a- b)2-4(a-b)c+4c2
ãã(32). (2a-3b)2-4(2a-3b)b+4b2 (33). -x2+10x-25
ãã(34). a2-8a-20 (35). m2+mn-20n2
ãã(36). (a+b)2-3(a+b)-18 (37). 4x2-3x-10
ãã(38) x2-14x+49 (39) m2-5m-6
ãã(40) 4a2+4a+1 (41) a2+24a+144
ãã(42) a2-5ab+4b2 (43) m2-4mn-12n2
ãã(44) 10x2-3xy-18y2 (45) (3S-r)2+9(3s-r)+8
ãã(46) 12x-4-9x2 (47) 1-10ab2+25a2b4
ãã(48) (a-b)2+4(b-a)+4 ï¼49ï¼ 2x4n÷x2n·(0.24xn)
ãã(50)3xy·2x4+7x2y(-x3)-(-x2y)·x2 ï¼51ï¼(6a5-7a2+36a3)÷3a2+2a(a2+a-6)
ãã(52)2(ï¼xny)3·(ï¼0.5xny2)3+0.75(x2ny3)3
ãã53ï¼ 54 55ã
ãã56ã2x2yï¼8xyï¼8y 57ãa2(xï¼y)ï¼4b2(xï¼y)
ããï¼äºï¼è®¡ç®
ãã58 59ã x2ï¼2xy+2y2.
ãã60 61
ãã62 63ï¼a+2bï¼3cï¼ï¼aï¼2b+3cï¼
ãã64å·²ç¥x(xï¼1)ï¼(x2ï¼y)ï¼ï¼2ï¼æ± çå¼ï¼
ãã65ã
ãã
ãã66ï¼»ï¼xï¼2yï¼ ï¼ï¼xï¼2yï¼ï¼2yï¼xï¼ï¼2xï¼2xï¼yï¼ï¼½Ã·2xï¼
ãã67å68é¢ï¼å解ä¸åå å¼ï¼
ããï¼1ï¼ . ï¼2ï¼ .
ãã69ï¼å
åç®ï¼åæ±å¼ï¼
ããï¼å
¶ä¸x = -2ãy = ï¼
ããï¼ä¸ï¼.计ç®é¢
ãã(70)ï¼ï¼1ï¼2+ï¼ï¼12ï¼-1ï¼5÷ï¼3.14ï¼Ïï¼0(4å)
ãã(71) (4å)
ãã(73) [ï¼x+yï¼2ï¼ï¼xï¼yï¼2]÷(2xy) (4å)
ãã(å)ç®ä¾¿æ¹æ³è®¡ç®ï¼74 ï¼ 98Ã102ï¼992 (4å) ï¼ 75ï¼ (4å)
ããï¼äºï¼.å å¼å解ï¼
ããï¼76ï¼ (4å) ï¼77ï¼ (4å)
ãã78. å·²ç¥ ï¼æ± çå¼ã(7å)
ããï¼79ï¼
ãã80 (x4-y4)÷ï¼x2-y2; 81 ï¼(-2a2)3
ãã
ãã82ï¼(ax+by)÷(a+b) 83ï¼6x2m÷2xm
ãã84ï¼am=4,an=3ï¼am+n, 86ï¼(2xï¼1)(ï¼3x+2)
ãã87ï¼ 88ï¼
ããï¼å
ï¼è®¡ç®ï¼
ãã89 ï¼ [-3(x+y)2]3 90 ï¼x·(x2)3-2x4·x2
ãã91ï¼-(x3)4·x2 (92)a3·a3 (93)b4·b4
ãã
ãã(94)(a3)5, (95)a3·a5 (96)(a2)3·a4 (97)(xy3)2
ãã98ï¼
ãã(99)计ç®ï¼am-1·an+2+am+2·an-1+am·an+1
ãã100ï¼-(x3)4·x2
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