Question

The mean proportional between (3+√2) and (12-√32) is​

Answer 1

Answer:

Correct Answer:

B) 2√7

Step-by-step explanation:

The mean proportion between (3+√2) and(12−√32) is

A)√ 7

B) 2√7

C) 6

D) (15−3√2)÷2

sol)

Description for Correct answer:

(3+√3):x:(12−√32)

a : b : c

mean proportion

b2=a×c

x2=(3+√2)×(12−sqrt32)

=(3+√2)×(12−4√2)=28

x=√28=2√7