整式加減混合運(yùn)算-資料下載頁(yè)
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【正文】 )＝______．(124) 化簡(jiǎn)代數(shù)式4x2[7x25x3(12x+x2)]的結(jié)果是______．(125) 2ab2+cd3=2a+( )d3=2ad3( )=c( )．(126) 3a(2a3b)+3(a2b)b=______．(127) 化簡(jiǎn)代數(shù)式x[y2x(x+y)]等于______．(128) [5a2+( )a7]+[( )a24a+( )]=a2+2a+1．(129) ．3x[y(2x+y)]=______．(130) 4a2nan(3an2a2n)＝______．(131) 若一個(gè)多項(xiàng)式加上3x2y+2x23xy4得2x2y+3xy2x2+2xy，則這個(gè)多項(xiàng)式為_(kāi)_____．(132) 5xmxm(7xm)+(3xm)=______．(133) 當(dāng)a=1，b=2時(shí)，[a(bc)][b(ca)]＝______．(134) 當(dāng)a=1，b=1，c=1時(shí)， [b2(5a)](3b+5c)＝______．(135) 2(3x+z)(6x)+(5y+3z)=______．(136) 5anan+1(7an+1)+(3an)＝______．(137) 3a(2a4b6c)+3(2c+2b)=______．(138) 9a2+[7a22a(a2+3a)]=______．(139) 當(dāng)2yx=5時(shí)，5(x2y)23(x+2y)100=______．(140) (3x+z)(6x)+(5y+3z)(141) 5anan+1(7an+1)+(3an)(142) 2a（3a2b+2）+（3a4b1)(143) 3a(2a4b6c)+3(2c+2b)(144) 9a178。+[7a178。2a(a178。+3a)](145) 2a(3a2b+2)+(3a4b1)(146) 2a178。(3a178。2b178。+2ab+2)+(3a178。4b178。1)(147) 2y178。+(2y5)178。(3y+2)178。(148) 3ab178。4a178。b+8a178。b7ab178。+3ab(149) 4x178。[7x178。5x3(12x+x178。)](150) 2x+2y[3x2(xy)]
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