Let's simplify the given expression step by step.
55√7 = 25√79√7 = 9√7-9/5√7 = -1.8√75*√7 = 5√7
So, the expression becomes:
25√7 + 9√7 - 1.8√7 + 9 + 5√7 - 9 (5√7 + 9/5 √7 - 9 - 5√7 - 9/5√7 + 9)
= 39√7 - 1.8√7 + 9 + 5√7 - 9 * (0)
= 43.2√7 + 14
Therefore, the simplified expression is 43.2√7 + 14.
Let's simplify the given expression step by step.
55√7 = 25√7
9√7 = 9√7
-9/5√7 = -1.8√7
5*√7 = 5√7
So, the expression becomes:
25√7 + 9√7 - 1.8√7 + 9 + 5√7 - 9 (5√7 + 9/5 √7 - 9 - 5√7 - 9/5√7 + 9)
= 39√7 - 1.8√7 + 9 + 5√7 - 9 * (0)
= 43.2√7 + 14
Therefore, the simplified expression is 43.2√7 + 14.