Answer:
[tex]x {}^{2} - 13x + 42[/tex]
[tex]x {}^{2} - 7x - 6x + 42[/tex]
[tex]x (x - 7) - 6(x - 7)[/tex]
[tex](x - 6)(x - 7)[/tex]
[tex]x = 6 \: and \: x = 7[/tex]
Answer:
[tex] {x}^{2} - 13x + 42[/tex]
[tex] {x}^{2} - 7x - 6x + 42[/tex]
[tex]x(x - ) - 6(x - 7)[/tex]
[tex](x - 6)(x - 7)[/tex]
