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Verified Answer :

Step 1. Move all terms to one side.

\(3 x^{2} +7x-24-13x=0\)

Step 2. Simplify \(3 x^{2} +7x-24-13x=0\) to \(3 x^{2} -6x-24\)

\(3 x^{2} -6x-24=0\)

Step 3. Factor out the common term 3

\(3( x^{2} -2x-8)=0\)

Step 4. Factor \(x^{2} - 2^{x} -8\)

1. Ask: Which two numbers add up to -2 and multiply to -8?

2. 
 Answer: -4 and 2

3. 
Rewrite the expression as \((x-4)(x+2):\)

\(3(x-4)(x+2)=0\)

Step 5. solve for \(x\)

1. Ask: When will \((x-4)(x+2)\) equal zero?

2. Answer: When \(x-4=0\) or \(x+2=0\)

3. 
Solve each of the 2 equations above:

\(x=4,2\)

Done! :) 
\(x=4,2\) is your answer.