Respuesta :

[tex]By \: formula \: (a + b)(c + d) \\ = ac + ad + bc + bd[/tex]

Applying this to question we get,

[tex]⇒x \times 2 + x \times 8 + 1 \times 2 + 1 \times 8 \\ ⇒2x + 8x + 2 + 8 \\ ⇒10x + 10 \\ = 10(x + 1)[/tex]

- BRAINLIEST answerer