2ab^2·(-3ab^2)^2
=2ab^2·9a^2b^4
=18a^3b^6
2x(1-3x)-(2x-1)(4-3x)
=2x-6x^2-(-6x^2+11x-4)
=2x-6x^2+6x^2-11x+4
=-9x+4
(2x+y)^2=(2x-y)^2+8xy
计算:2ab^2·(-3ab^2)^2
计算:2ab^2·(-3ab^2)^2
2x(1-3x)-(2x-1)(4-3x)
(2x+y)^2=(2x-y)^2+____
2x(1-3x)-(2x-1)(4-3x)
(2x+y)^2=(2x-y)^2+____
数学人气：844 ℃时间：2020-02-20 19:08:57
优质解答
我来回答
类似推荐