设长 x 厘米,那么宽是 x - 1 厘米
x(x - 1) = 132
x² - x - 132 = 0
(x - 12)(x + 11) = 0
x = 12 (x = -11 舍去)
所以 x - 1 = 11
答:长方形的长是 12 厘米,宽是 11 厘米.
设长 x 厘米,那么宽是 x - 1 厘米
x(x - 1) = 132
x² - x - 132 = 0
(x - 12)(x + 11) = 0
x = 12 (x = -11 舍去)
所以 x - 1 = 11
答:长方形的长是 12 厘米,宽是 11 厘米.