(1)-22-(-1)3(2)4-5*(-1/2)3(3)(-10)2/5×(-2/5)(4)(-5)3×(-3/5)2(5)5×(-6)-(-4)3/(-8)(6)(-6)×8-(-2)3-(-4)2*5(7)(-1/2)2+1/2*(2/3-|2/3-2|)(8)-2/3*[-32×(-2/3)2-2](9)-52-[-4+(1-0.2×1/5)/(-2)](10)当x=-2时,代数式6x+5/1-x的值是(11)根据

Question

(1) -22-(-1)3
(2) 4-5*(-1/2)3
(3) (-10)2/5×(-2/5)
(4) (-5)3×(-3/5)2
(5) 5×(-6)-(-4)3/(-8)
(6) (-6)×8-(-2)3-(-4)2*5
(7) (-1/2)2+1/2*(2/3-|2/3-2|)
(8) -2/3*[-32×(-2/3)2-2]
(9) -52-[-4+(1-0.2×1/5)/(-2)]
(10) 当x=-2时,代数式6x+5/1-x的值是
(11) 根据生活经验,对代数式a+b作出解释
(12) *有这样一道题"当a=2b=-2时,求多项式3a3b3-1/2a2b+b-(4a3b3-1/4a2b-b2)+(a3b3+1/4a2b)-2b2+3的值"小虎把a=2抄成a=-2,小镇没抄错,但他们俩的结果一样,问为什么?
麻烦大哥抄一下原题,

Answer 1

(1)-22-(-1)×3=-22+3=-19
(2)4-5×(-1/2)×3=4+15/2=23/2
(3)(-10)×2/5×(-2/5)=8/5
(4)(-5)×3×(-3/5)×2=18
(5)5×(-6)-(-4)×3/(-8)=-30-3/2=-63/2
(6)(-6)×8-(-2)×3-(-4)×2×5=-48+6+40=-2
(7)(-1/2)×2+1/2×(2/3-|2/3-2|)=-1-1/3=2/3
(8)-2/3×[-32×(-2/3)×2-2]=-2/3×(122/3)=-244/9
(9)-52-[-4+(1-0.2×1/5)/(-2)]=-52-(-4-0.48)=-47.52
(10)当x=-2时,代数式6x+5/1-x的值是
(6x+5)/(1-x)=(-7)/3=-7/3