请问这是哪里的知识点

NO.PZ2018103102000104 问题如下 Matt is evaluating Company M using the single-stage resiincome mol anhassemblerelevant information in the following table. What`s the justifieprice-to-book ratio for Company M? A.1.67 B.2.5 C.3.69 A is correct.考点Single Stage ResiIncome Valuation解析:PB=1+ROE−rr−g=1+14.5%−10.9%10.9%−5.5%=1.67\frPB=1+\frac{ROE-r}{r-g}=1+\frac{14.5\%-10.9\%}{10.9\%-5.5\%}=1.67BP​=1+r−gROE−r​=1+10.9%−5.5%14.5%−10.9%​=1.67 老师，您好！这个公式是如何推导得到的啊？麻烦说明一下，谢谢！