Question

Find the missing value, a :
{\left( {4\sqrt x + 3} \right)^2} = 16x + a\sqrt x + 9

Answer 1

\[{\left( {4\sqrt x + 3} \right)^2} = 16x+24\sqrt{x}+9\]

Answer 2

@trish30, when it comes to problems such as these, it is often useful to start with \(x = 0\).