<s>[INST] Find the area of a triangle using the sides lengths 
The sides lengths of a triangle $a,$ $b$ and $c$ verify: $$\sqrt{a-24} + b^2 +|c-12\sqrt{3} |+144=12b.$$ The task is to find the area of the triangle.

I'm trying to apply the heron's formula: $$\dfrac{\sqrt{(a+b+c)(a+b-c)(a+c-b)(b+c-a)}} {4}.$$
How do i get to heron's formula from what i know? Or it can be solved in another way?
 [/INST] I think in you equation ,must be $24b$ $$\sqrt{a-24} + b^2 +|c-12\sqrt{3} |+144=24b\\
\sqrt{a-24} + b^2 -24b+144+|c-12\sqrt{3} |=0\\
\sqrt{a-24} + (b-12)^2+|c-12\sqrt{3} |=0
\\\underbrace{\sqrt{a-24}}_{\geq 0} +\underbrace{(b-12)^2}_{\geq 0} + \underbrace{|c-12\sqrt{3} |}_{\geq 0} =0$$ some of positive expressions are zero , so all af them are zero at the same time 
$$\begin{cases}\sqrt{a-24}=0 & a =24\\(b-12)^2=0 & b=12\\|c-12\sqrt{3} |=0 & c=12\sqrt3\end{cases}$$ now plug into Heron's formula 
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