Question

calcule 15-√100 -1+√81-√49

Answer 1

$15- \sqrt{100} -1+ \sqrt{81}- \sqrt{49}= \\ \\ 15- 10 -1+9-7= \\ \\ 15+9-10-1-7= 24-18= \boxed{6}$

Answer 2

15-√100 -1+√81-√49 = 
15 - 10 - 1+ 9 - 7 =
6