计算; 1.(x-2)(x+2)-(x+1)(x-3) 2.(-1/2x)^7/(-1/2x)
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计算;1.(x-2)(x+2)-(x+1)(x-3)2.(-1/2x)^7/(-1/2x)计算;1.(x-2)(x+2)-(x+1)(x-3)2.(-1/2x)^7/(-1/2x)计算;1.(x-2)
计算; 1.(x-2)(x+2)-(x+1)(x-3) 2.(-1/2x)^7/(-1/2x)
计算; 1.(x-2)(x+2)-(x+1)(x-3) 2.(-1/2x)^7/(-1/2x)
计算; 1.(x-2)(x+2)-(x+1)(x-3) 2.(-1/2x)^7/(-1/2x)
1.(x-2)(x+2)-(x+1)(x-3)
=x²-4-x²+3x-x+3
=2x-1
2.(-1/2x)^7/(-1/2x)
=(-1/2x)^(7-1)
=(-1/2x)^6
=1/(64x^6)
(x-2)(x+2)-(x+1)(x-3) =x平方-4-(x平方-2x-3) =2X-1 2..(-1/2x)^7/(-1/2x) =(-1/2x)^6 =x^6/64
(1)2x-1
(2)1/64x^6
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