Answer:
[tex]x {}^{2} + 8x + 15[/tex]
[tex] \implies \: x {}^{2} + 3x + 5x + 15[/tex]
[tex] \implies \: x(x + 3) + 5(x + 3)[/tex]
[tex] \implies \: (x + 5)( + 3)[/tex]
Answer:
[tex] {x}^{2} + 8x + 15 \\ {x}^{2} + 5x + 3x + 15 \\ x(x + 5) + 3(x + 5) \\ = (x + 3)(x + 5)[/tex]
