Explanation
[tex]4\mleft(x+2\mright)+x+3[/tex]
Step 1
use distributive property to break the parenthesis:
remember the distributive property
[tex]a(b+c)=ab+ac[/tex]Hence
[tex]\begin{gathered} 4(x+2)+x+3 \\ (4x+8)+x+3 \\ 4x+8+x+3 \\ \end{gathered}[/tex]Step 2
add like terms
[tex]\begin{gathered} 4x+8+x+3 \\ 5x+11 \end{gathered}[/tex]so, the answer is
[tex]5x+11[/tex]I hope this helps you