Answer:
11[tex]\sqrt{2}[/tex] - 5√7
Step-by-step explanation:
= 9[tex]\sqrt{2}[/tex] - 3[tex]\sqrt{7}[/tex] + 2√2 - 2[tex]\sqrt{7}[/tex]
= 11[tex]\sqrt{2}[/tex] - 3[tex]\sqrt{7}[/tex] - 2[tex]\sqrt{7}[/tex] add similar elements
= 11[tex]\sqrt{2}[/tex] - 5[tex]\sqrt{7}[/tex]
