Answer:
[tex]8x+1\\6x^2+8x+1\\6x^2+2x+1\\3x^2+5x+1\\3x^2+5x+1[/tex]
Step-by-step explanation:
Standard form of polynomial [tex]=ax^{2}+bx+c[/tex]
[tex]5x-3x+1+6x\\11x-3x+1\\8x+1[/tex]
[tex]1+6x^{2}+5x+3x\\6x^{2}+(5x+3x)+1\\6x^{2}+8x+1[/tex]
[tex]6x^{2}+5x-3x+1\\6x^{2}+2x+1[/tex]
[tex]-3x^{2}+5x+6x^{2}+1\\-3x^{2}+6x^{2}+5x+1\\3x^{2}+5x+1[/tex]
[tex]-3x^{2}+6x^{2}+5x+1\\3x^{2}+5x+1[/tex]