(-47.65)x2又6/11+(-37.15)x(-2又6/11)+10.5x(-7又5/11).简便
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(-47.65)x2又6/11+(-37.15)x(-2又6/11)+10.5x(-7又5/11).(-47.65)x2又6/11+(-37.15)x(-2又6/11)+10.5x(-7又5/11).
(-47.65)x2又6/11+(-37.15)x(-2又6/11)+10.5x(-7又5/11).简便
计算:(-47.65)x2又6/11+(-37.15)x(-2又6/11)+10.5x(-1又5/11).
(-2/9)x(-18)+(-5/11)x(-3)x2又1/5
2(6x2+x)2-11(6x2+x)+5 分解因式x2 意为 x的平方
(-9又8分之7)x2.25二?
(1)2X2=6 (2)(2-3X)2=1 (3)X2=4X (7)2(X+3)2=X(X+3) (8)X2-2又根号5X+2=0 (9)(X+1)2-3(X+1)+2=0 (13) (2X+5)(X-2)=X2+2 (14)X2+4X+9=2X+11(19)X2-4X+1=0 (20)2(X+1)2-4(X+1)+2=0
[1又2分之3减(1/3-1/6+5/12)x2.4]x5
56又11分之8除以9 (2又2/9×4/5+2又2/9x6.2-5.8x2又2/9-1/5÷9/20)x9/20=?的简算法
连问两次.1.{(7又1/13+2.4÷6又2/5)+2又5/8}x52.{(10.75-4又11/12)x2又7/11}÷{(1.125+1/12)÷(2.25÷10又10/11)}3.1/(4x7)+1/(7x10).+1/(100x103)4.1-5/6+7/12-9/20+11/30-13/42+15/56-17/72+19/905.(46-1/7)x1
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(x2+y2)2-(x2+y2)-6=
f(x)=(√2011-x2)+(√x2-2011)既是奇函数又是偶函数 怎么算
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X3-4xy2-2x2y+8y3(x2+x)2-8(x2+x)+1212x2-5x-25x2+6xy-8y2x4+64x3-11x2+31x-213a3b-81b4a7-ab6ab(c2-d2)+cd(a2-b2)4x4-13x2+9(x2-2x)2-7(x2-2x)+12x2+x-(a2-a)本人很笨,可以的话写得详细清楚点.
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解方程:1/x2+x +1/x2+3x+2 +1/x2+5x+6 +1/x2+7x+12 +1/x2+9x+20=5/x2+11x-708解方程:1/x2+x +1/x2+3x+2 +1/x2+5x+6 +1/x2+7x+12 +1/x2+9x+20=5/x2+11x-708