(1) x²-(x³y-2x²y²)÷xy (2) (1-1/2)(1+1/2)(1+1/4)(1+1/16)(3) (2x-3y)²-(y+3x)(3x-y) (4) (2a³b²-4a的四次方b³+6a的五次方b的四次方)÷(-2a³b²)
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/06 23:37:59
![(1) x²-(x³y-2x²y²)÷xy (2) (1-1/2)(1+1/2)(1+1/4)(1+1/16)(3) (2x-3y)²-(y+3x)(3x-y) (4) (2a³b²-4a的四次方b³+6a的五次方b的四次方)÷(-2a³b²)](/uploads/image/z/1611924-60-4.jpg?t=%EF%BC%881%EF%BC%89+x%26%23178%3B-%28x%26%23179%3By-2x%26%23178%3By%26%23178%3B%29%C3%B7xy+%EF%BC%882%EF%BC%89+%EF%BC%881-1%2F2%EF%BC%89%EF%BC%881%2B1%2F2%EF%BC%89%EF%BC%881%2B1%2F4%EF%BC%89%EF%BC%881%2B1%2F16%EF%BC%89%EF%BC%883%EF%BC%89+%EF%BC%882x-3y%EF%BC%89%26%23178%3B-%EF%BC%88y%2B3x%EF%BC%89%EF%BC%883x-y%EF%BC%89+%EF%BC%884%EF%BC%89+%EF%BC%882a%26%23179%3Bb%26%23178%3B-4a%E7%9A%84%E5%9B%9B%E6%AC%A1%E6%96%B9b%26%23179%3B%2B6a%E7%9A%84%E4%BA%94%E6%AC%A1%E6%96%B9b%E7%9A%84%E5%9B%9B%E6%AC%A1%E6%96%B9%EF%BC%89%C3%B7%EF%BC%88-2a%26%23179%3Bb%26%23178%3B%EF%BC%89)
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(1) x²-(x³y-2x²y²)÷xy (2) (1-1/2)(1+1/2)(1+1/4)(1+1/16)(3) (2x-3y)²-(y+3x)(3x-y) (4) (2a³b²-4a的四次方b³+6a的五次方b的四次方)÷(-2a³b²)
(1) x²-(x³y-2x²y²)÷xy (2) (1-1/2)(1+1/2)(1+1/4)(1+1/16)
(3) (2x-3y)²-(y+3x)(3x-y) (4) (2a³b²-4a的四次方b³+6a的五次方b的四次方)÷(-2a³b²)
(1) x²-(x³y-2x²y²)÷xy (2) (1-1/2)(1+1/2)(1+1/4)(1+1/16)(3) (2x-3y)²-(y+3x)(3x-y) (4) (2a³b²-4a的四次方b³+6a的五次方b的四次方)÷(-2a³b²)
(1) x²-(x³y-2x²y²)÷xy
=x²-x²+2xy
=+2xy
(2) (1-1/2)(1+1/2)(1+1/4)(1+1/16)
=(1-1/4)(1+1/4)(1+1/16)
=(1-1/16)(1+1/16)
=1-1/256
=255/256
(3) (2x-3y)²-(y+3x)(3x-y)
=4x²-12xy+9y²-9x²+y²
=-5x²-12xy+10y²
(4) (2a³b²-4a的四次方b³+6a的五次方b的四次方)÷(-2a³b²)
=-1+2ab-3a²b²
=(-1+3a)(1-a)
=(3a-1)(1-a)