4x^1/4(-3x^1/4y^1/3)/(-6x^-1/2y-2/3)
问题描述:
4x^1/4(-3x^1/4y^1/3)/(-6x^-1/2y-2/3)
我算的是2XY 答案是2X3次方根的根号y?
答
4x^1/4(-3x^1/4y^1/3)/(-6x^-1/2y-2/3)
=[4*(-3)/(-6)]*(x^1/4*x^1/4/x^-1/2)*(y^1/3/y^-2/3)
=2x^[1/4+1/4-(-1/2)]y^[1/3-(-2/3)]
=2xy
你算的是对的!答案错了哦,因为我数学不好- - 算出来的答案老是有种不相信自己的感觉我算了好几遍全是这个数