当x=-0.3,y=0.2时,则代数式(|3x-2y|-|2x-3y|)^2的值为
问题描述:
当x=-0.3,y=0.2时,则代数式(|3x-2y|-|2x-3y|)^2的值为
答
(|3x-2y|-|2x-3y|)^2=(|3×(-0.3)-2×0.2|-|2×(-0.3)-3×0.2|)^2=(|-0.9-0.4|-|-0.6-0.6|)^2=(1.3-1.2)^2=0.1^2=0.01