计算:(6m³n)•(-2mn)÷(4mn²)
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/07/15 09:21:50
计算:(6m³n)•(-2mn)÷(4mn²)
(4x²y-2x³)÷(-2x)²
(二分之一)º×3的负二次方
x²•x³+x^7÷x^2
[(x-y)²+(x+y)(x-y)]÷(2x)
(-四分之三b²c)÷(3b)
(8×10^7)÷(-2×10³)
(3m²n³)÷(mn)²
(15x³-10x²)÷(5x)
x•(9x³y-3xy²)÷(-3x²y)
(4x²y-2x³)÷(-2x)²
(二分之一)º×3的负二次方
x²•x³+x^7÷x^2
[(x-y)²+(x+y)(x-y)]÷(2x)
(-四分之三b²c)÷(3b)
(8×10^7)÷(-2×10³)
(3m²n³)÷(mn)²
(15x³-10x²)÷(5x)
x•(9x³y-3xy²)÷(-3x²y)
(1)(6m³n)×(-2mn)÷(4mn²)
=-3m^(3+1-1)n^1+1-2)
=-3m³
(2)(4x²y-2x³)÷(-2x)²
=(4x²y-2x³)÷(4x²)
=y-1/2 x
(3)(4x²y-2x³)÷(-2x)²
=(4x²y-2x³)÷(4x²)
=y-1/2 x
(4)(1/2)的0次方×3的-2次方
=1×1/9
=1/9
(5)x²×x³+x的7次方÷x²
=x^5+x^5
=2x^5
(6)[(x-y)²+(x+y)(x-y)]÷2x
=(x²-2xy+y²+x²-y²)÷2x
=(2x²-2xy)÷2x
=x-y
=-3m^(3+1-1)n^1+1-2)
=-3m³
(2)(4x²y-2x³)÷(-2x)²
=(4x²y-2x³)÷(4x²)
=y-1/2 x
(3)(4x²y-2x³)÷(-2x)²
=(4x²y-2x³)÷(4x²)
=y-1/2 x
(4)(1/2)的0次方×3的-2次方
=1×1/9
=1/9
(5)x²×x³+x的7次方÷x²
=x^5+x^5
=2x^5
(6)[(x-y)²+(x+y)(x-y)]÷2x
=(x²-2xy+y²+x²-y²)÷2x
=(2x²-2xy)÷2x
=x-y
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