Question

Consideram numerele reale a,b si c . Se stie ca a+b=5√2 , iar c=3√2.
a)Calculati (a+b)+c si a+(b+c)
b)Daca a=-√2 , determminati b-c.

Answer 1

a)(a+b)+c=11.3137; a+(b+c)=18.38477

b)b=5.66    b-c=1,4184