Question

Va rog ajutor mor de somn:(
DOAR EX 4!!!dau coroana!!

Answer 1

Răspuns:

Explicație pas cu pas:

4.

a) √18-5√50+6√8=3√2-25√2+12√2= -10√2

b) √80+√75-√125-9√5=4√5+5√3-5√5-9√5=5√3 -10√5    

c) 3√2+√50-√32+√2⁷=3√2+5√2-4√2+8√2=12√2              

d) √18-√12=3√2-2√3

e) √56·2√7=2√14·2√7=4√(14·7)=28√2    

f) (2/√5+√5)·√5=2√5/√5+(√5)²=2+5=7  

g) (√14-√28)·√7+14=7√2-14+14=7√2          

h) 4√3+0,(3)√27-1,4√75-2√6·3√2+4√3:2-3(√147-√48)=  

4√3+(3/9)·3√3-(14/10)·5√3-6√12+2√3-3(7√3-4√3)=

4√3+√3-7√3-12√3+2√3-9√3=5√3-19√3-7√3=5√3-26√3= -21√3

i) √175-2√343+6√14:√2-2(√7-1)-6√7:√63+3√28=

5√7-14√7+6√7-2√7+2-6√7:3√7+6√7=5√7-14√7+6√7-2√7+2-2+6√7=

5√7-14√7+6√7-2√7+6√7= -9√7+4√7+6√7= -9√7+10√7=√7