The value is 7x.
Step-by-step explanation:
The expression is [tex]5x-3-x+3(x+1^{2} )[/tex]
First completing the parenthesis and exponent, we get,
[tex]5x-3-x+3(x+1)\\5x-3-x+3x+3[/tex]
Now grouping terms of their kind, we get,
[tex](5x-x+3x)+(-3+3)[/tex]
Completing the parenthesis,
[tex]7x[/tex]
Thus, the value of the expression is 7x.