Answer:
[tex]x^{2} + ( 4x) + (147) [/tex]
Step-by-step explanation:
Here, the given expression is
[tex]x^{2} +3x +3 + (2x+134+15) - (x+5)[/tex]
Now, simplifying the brackets, we get
[tex]x^{2} +3x +3 + (2x+134+15) - (x+5)[/tex] = [tex]x^{2} +3x +3 + 2x+134+15 - x -5[/tex]
Now, operate on the like terms.
= [tex]x^{2} + ( 3x + 2x -x) + (134 + 15 + 3 -5) [/tex]
=[tex]x^{2} + ( 4x) + (147) [/tex]
Hence, the given expression is simplified to the quadratic equation [tex]x^{2} + ( 4x) + (147) [/tex]
