Question

Find 3rd proportion of a minus b and acube minus a square b

Answer 1

Step-by-step explanation:

Let the mean proportional between a–b and a

3

–a

2

b be x

a–b,x,a

3

–a

2

b are in continued proportion

a–b,x=x:a

3

–a

2

b

x∗x=(a–b)(a

3

–a

2

b)

x

2

=(a–b)a

2

(a–b)=[a(a–b)]

2

x=a(a–b)