数学,用函数和因式分解 解应用题- 离问题结束还有 14 天 23 小时 A rectangular

数学,用函数和因式分解 解应用题- 离问题结束还有 14 天 23 小时 A rectangular

Solution :Let the length of rectangular carpet be X,the width of rectangular carpet be Y.Area of square carpet = 4×4 = 16Area of rectangualr carpet = XY = 16∵ X = 3Y - 2 (Given)∴ (3Y-2)Y = 16ie.3Y² - 2Y - 16 = 0(Y+2)(3Y-8) = 0∴ Y₁= -2 (Rejected)Y₂= 8/3 (m)∴ Y = 8/3,X = 16÷(8/3) = 6 (m)So,the length and width of the rectangular carpets are 6 m and 8/3 m,respectively.======以下答案可供参考======供参考答案1:s=4*4=a*ba=3b-2thus,we find 16=b(3b-2)3b^2-2b-16=0(3b-8)(b+2)=0therefore,b=8/3 a=3b-2=6

这个答案应该是对的