Answer:
13 - 17[tex]\sqrt{11}[/tex]
Step-by-step explanation:
Using the rule
[tex]\sqrt{a}[/tex] × [tex]\sqrt{a}[/tex] = a
Each term in the second factor is multiplied by each term in the first factor, that is
2[tex]\sqrt{11}[/tex] ([tex]\sqrt{11}[/tex] - 9 ) + 1 ([tex]\sqrt{11}[/tex] - 9 )
Distribute both parenthesis
= (2 × 11) - 18[tex]\sqrt{11}[/tex] + [tex]\sqrt{11}[/tex] - 9
= 22 - 17[tex]\sqrt{11}[/tex] - 9
= 13 - 17[tex]\sqrt{11}[/tex]
