1-1+2+1+5-8+16-12-1-1-1等于多少啊!
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1-1+2+1+5-8+16-12-1-1-1等于多少啊!1-1+2+1+5-8+16-12-1-1-1等于多少啊!1-1+2+1+5-8+16-12-1-1-1等于多少啊!1
1-1+2+1+5-8+16-12-1-1-1等于多少啊!
1-1+2+1+5-8+16-12-1-1-1等于多少啊!
1-1+2+1+5-8+16-12-1-1-1等于多少啊!
1
1-1+2+1+5-8+16-12-1-1-1等于多少啊!
(1/2+1/4+1/6+1/8)-(1/3+1/6+1/9+1/12)+(1/4+1/8+1/12+1/16)-(1/5+1/10+1/15+1/20)快
(1/2+1/4+1/6+1/8)-(1/3+1/6+1/9+1/12)+(1/4+1/8+1/12+1/16)-(1/5+1/10+1/15+1/20)=
(1/2+1/4+1/6+1/8)-(1/3+1/6+1/9+1/12)+(1/4+1/8+1/12+1/16)-(1/5+1/10+1/15+1/20)怎么解?
(1/2+1/4+1/6+1/8)-(1/3+1/6+1/9+1/12)+(1/4+1/8+1/12+1/16)-(1/5+1/10+1/15+1/20)
16/1+2/1*8/5-3/1求解
根据例子计算 计算2/1+4/1+8/1可以这样考虑:2/1=1-2/1,4/1=2/1-4/1/,8/4=4/1-8/12/1+4/1+8/1=(1-2/1)+(2/1-4/1)+(4/1-8/1)=1-8/1=8/7求1 2/1+2 4/1+3 8/1+4 16/1+5 32/1+.+10 1024/1
-1+1-1+1-1+1-1+1-1+1-1+1-1+1和1+2-3-4+5+6-7-8+9+10-11-12+13+14-15-16的简便方法快
行列式 125 64 27 8 25 16 9 4 5 4 3 2 1 1 1 1 是不是等于12
4,2,1,1/2,1/4,( ) ( ) ( )1/8,1/32,1/4 ,1/16( )( ) ( )1/2,1/6,1/12,1/20,1/30,1/42 ( ) ( ) ( )
1+(-2)+|-2-3|-5 (1/4-1/16-1/6+1/12)x(-48) 这两题
(-8)+(-5/2)+2+(-1/2)+12
6×(-7)×(-5)=?(-8)×3/16×(-1)×6×(-7)×(-5)=?(-8)×3/16×(-1)×1/2=?-9×(+11)-12×(-8)=?
1/2 - 1/6 - 1/12 - 1/20 - 1/30 - 1/42=?1/2+1/4+1/8+1/16+1/32+1/64=?
1.计算(1)(5+1)*(5^2+1)*(5^4+1)*(5^8+1)-1/4*5^16(2)(2+1)*(2^2+1)*(2^4+1)*(2^8+1)*(2^16+1)/2^32-1
2/1 3/1 4/1 5/1 6/1 8/1 10/1 12/1 15/1 20/1
12/1+16/1
1-8/3-16/5-5/1