Changes

2ab = <math>\frac{ab(b + c)} {a}</math><br>

2ab = <math>\frac{ab(b + c)} {a}</math><br>

Cancel 'a' in Right hand side and multiply 'b' inside to the bracket we get<br>

Cancel 'a' in Right hand side and multiply 'b' inside to the bracket we get<br>

2ab = <math>b^{2}</math> + bc ---------->1

2ab = <math>b^{2}</math> + bc ---------->1<br>

Also 'b' is the geometric mean between 'a' and 'c'<br>

Also 'b' is the geometric mean between 'a' and 'c'<br>

That is b = <math>\sqrt{ac}</math><br>

That is b = <math>\sqrt{ac}</math><br> ------------------> 2<br>