Question

Calcule o valor da expressão

Answer 1

a)2/√81-√16/3+3/√25-√36/3

=2/9-4/3+2/5-2

=2-12+18-18

=-10.

b)√4/√25-√1/√9+√9/√25-√4/9

=2/5-√1/3+3/5-2

=6-5√3+9-30

=-15-5√3

c)√1/√25×√25/√9×(√9÷4)²-√1/√16

=1/5×5/3×9/4-√1/4

=5/15×9/4-√1/4

=45/60-√1/4

=3/4-√1/4

=3-√1.