Share

Books Shortlist

# Find The Mean Proportional to (X – Y) and (X3 – X2y). - ICSE Class 10 - Mathematics

#### Question

Find the mean proportional to (x – y) and (x3 – x2y).

#### Solution

Let the mean proportional to (x - y) and (x^3 - x^2y) be n

=> (x - y), n, (x^3 - x^2y) are in continued proportional

=> (x - y) : n = n : (x^3 - x^2y)

=> n^2 = x^2(x - y)(x - y)

=> n^2 = x^2(x - y)^2

=> n = x(x - y)

Is there an error in this question or solution?

#### APPEARS IN

Selina Solution for Selina ICSE Concise Mathematics for Class 10 (2018-2019) (2017 to Current)
Chapter 7: Ratio and Proportion (Including Properties and Uses)
Ex.7D | Q: 9.3

#### Video TutorialsVIEW ALL [1]

Solution Find The Mean Proportional to (X – Y) and (X3 – X2y). Concept: Proportions.
S