5x(2x²3x+4) -6x(x-3y) -2a²(1/2ab+b²) (2/3x
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5x(2x²3x+4) -6x(x-3y) -2a²(1/2ab+b²) (2/3x²y-6xy)·1/2xy²
一小时之内啊,越快赏得越多啊!
一小时之内啊,越快赏得越多啊!
![5x(2x²3x+4) -6x(x-3y) -2a²(1/2ab+b²) (2/3x](/uploads/image/z/18067439-47-9.jpg?t=5x%EF%BC%882x%26%23178%3B3x%2B4%EF%BC%89+-6x%EF%BC%88x-3y%EF%BC%89+-2a%26%23178%3B%281%2F2ab%2Bb%26%23178%3B%EF%BC%89+%EF%BC%882%2F3x%26%231)
数学之美团为你解答
5x·(2x²-3x+4) = 10x³ - 15x²+20x
- 6x·(x-3y) = - 6x² +18xy
-2a²(1/2ab+b²) = - a³b - 2a²b²
(2/3x²y-6xy)·1/2xy² = 1/3 x³y³ - 3x²y³
5x·(2x²-3x+4) = 10x³ - 15x²+20x
- 6x·(x-3y) = - 6x² +18xy
-2a²(1/2ab+b²) = - a³b - 2a²b²
(2/3x²y-6xy)·1/2xy² = 1/3 x³y³ - 3x²y³
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