Question

ex 11 va rog!!! e urgent ​

Answer 1

Răspuns:

a) x=13√8-√50=13·2√2-5√2=26√2-5√2=21√2

   y= √125-3√20= 5√5-3·2√5=5√5-6√5= -√5

b) x=2√27-√48=2·3√3-4√3=6√3-4√3=2√3

   y= -√45-√80= -3√5- 4√5=-7√5

c) x=4√18-√32= 4·3√2-4√2=12√2-4√2=8√2

   y= -√24-2√54= -2√6-2·3√6=-2√6-6√6= -8√6

d) x= -√108-√27= -6√3-3√3= -9√3

  y= √63-3√28=3√7-3·2√7= 3√7-6√7=√7

Explicație pas cu pas: