作业帮问一道英文的数学题~大家帮帮偶挖
来源：学生作业帮 编辑：拍题作业网作业帮 分类：英语作业 时间：2024/04/28 14:22:43
问一道英文的数学题~大家帮帮偶挖
偶有个同学跑去加拿大上学了,然后他发了这题目给我…… = =
forty metres of fencing are available to enclose a rectangular pen.when the length of the pen is X metres ,the area of the pen,is square metres ,is expressed as 201-X'2 what is the area of the pen for each value of
补充：
X‘2的意思是X的平方
偶有个同学跑去加拿大上学了,然后他发了这题目给我…… = =
forty metres of fencing are available to enclose a rectangular pen.when the length of the pen is X metres ,the area of the pen,is square metres ,is expressed as 201-X'2 what is the area of the pen for each value of
补充：
X‘2的意思是X的平方
将40m的围栏充分利用,用来做一个矩形的羊圈.当羊圈长为X米时,羊圈的面积为201-X'2平方米,求X的每种可能取值下的羊圈的面积.