1.(1).(2)
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1.(1).(2)
1.计算的结果是_______2.计算(1)(2)
1/6、1/3、1/2( )、5/6、1.
1.(-8)×(-2)+(-1)×(-8)-(-3)×(-8) 2.-21×(3-4╱7)
1.化简[2sin2a/(1+cos2a)]*1/tana
第113页 1.(1)(2)(3)(4) 3.
数独横竖9个方格填1-9数字不能重复数字1.()(2)(7)()(6)()(1)()()2.()()(4)(1)()(7)()(9)(8)3.()()(1)(8)()()()(2)()4.()(5)(
设n为正整数计算 1.(-1)2n 2.(-1)2n+1
设n为正整数计算 1.(-1)2n 2.(-1)2n+1
1.(1-x)/(x-2)=[1/(2-x)]-22.[(x-3)/(x²-1)]-[2/(1+x)]
横竖9个方格填1-9数字不能重复1.(5)()()(2)()()(7)(4)() 2.(1)()()()(7)(3)(6)()() 3.(2)()(9)()(4)()(3)()() 4.()(5)()(4
横竖9个方格填1-9数字不能重复1.(5)()()(2)()()(7)(4)() 2.(1)()()()(7)(3)(6)()() 3.(2)()(9)()(4)()(3)()() 4.()(5)()(4
计算:(--2)^2013+(-2)^2012+(-2)^2011+…+(-2)^3+(-2)^2+(-2)+1.根据规律(x-1)(x^n-1+…+x+1)=(x^n)-1计算
1.(+2)+(-11)2.(+20)+(+12)3.(-1又2分之1)+(-3分之2)4.(-3.4)+4.3
1.绝绝对值不等式:(1)|x-2|≤3 (2)1
脱式计算有理数的乘方(-5)^2×(-5分之1)^2 (-3)^3×(-3分之1)^2 -2^3×(-3)^2 (-1)^2×(-2^2)1.(-5)^2×(-5分之1)^2 2.(-3)^3×(-3分之1)^23.-2^3×(-3)^24.(-1)^2×(-2^2)
1.Lingling is from China.(对画线部分提问) (1)( )( )Lingling( )? (2)( )( )Lingling(接上题)( )( )?2.We are Chinese.(用he改写)(1)--------- ---------- -----------(2)-------
计算:1.(x+2y-1)的平方