數(shù)學(xué)初二上學(xué)期計算題-展示頁
2025-04-13 04:26本頁面
【正文】 [(mn)2(mn)3]2 (mn)479．已知(a+b)2=7,(ab)2=4求a2+b2和ab的值 80.( a2a4)3 (a3)281 [2381 (1)2 ()2 70 82. 已知10m=3,10n=2,求102mn值83．[(a3)3(a4)3] (a2 )3 (a3)2 84. (a+2b)m+1 (a+2b)m3 (a+2b)285, (a6 a2)2 [(a9 a3) a2] 86. 若 y2m1y=y2 求m2的值87. 103+()2 [(2)2002]0(3)3 +I13I 88. 已知x2+x2=5 求x4+x4的值2011,89．x+y1=10,x3+y3=100求 x2+y2的值 90.. 35a7b3c 7a4bc91 a3b4c2 (ab3) 92. [4(x2)2+12(x+2)(x2)8(x1)2(x2)] 4(x2) 93. [(2xy)2(z2)3] [x(y)2(xz2)] 94. (2ab)2(a2b2)(2a2b2)4b2+4a2b495. [(3ab)2 a32a2(3ab2)3 b] (3a2b)2 96. 若ax3my12 3x3y2n=4x6y6 求(2m+na)n的值97 l n2 l+(m+n1)2=0求m50 n3的值 98. [3(x+b)36(x+b)2+9(x+b)] 3(x+b) 28an1b2= b2 求m n 的值 100. (2m3n2+3m2n2—mn3+4mn) (mn)..2101 ()() 102 [(3xy)2x32x2 (3xy2)2 y] 9x4y2103 [(4xy)2+y(x)] 8x2 104. (3x2+9x3y5x2y2)(3x) 105. M 3xy=xn+1+求M 106. (ax3+bx2+cx)(x)107. [(x+3y)(x3y)(3xy)2+(4x3y)(5x+2y)xy] 108. (12x4y68x2y416x3y5) 4x2y3109 4（x2+y）(x2y)(2x2y)2 110.[(x+y)2+(xy)2](2x2y2)111. (xi)2(x1)(x+1)+3(x+1)0 112. x(x+1)2x(x23)2(x+1)(x1)=202011. 2 5113 [2x2(x+y)(xy)][(xy)(x+y)+2y2] 114. (3x2y+1)(3x2y1)115 (xy)2(x+y)2 116. (a4x2+a3x3ax) (a2x2)..6117 ()2(an+1b2)2 (–anb)2 118。 6a2
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