This question was asked in Ex 9.1, 7
If we have 
20underroot3=h+20
h+20=20underroot3
h=20underroot3_20
How it becomes 20(underroot3-1).
Mir Muzamil's image
Mir Muzamil
Aug. 17, 2021, 7:54 a.m.

Answer the question...

Mir Muzamil's image