Question

De la testul || ex 1 si 2, iar de la test de autoevaluare partea a doua tot, va rog

Answer 1

/-radical( nu am radical pe tastatura)

1. a) (2/3-3)(/3+1)=2/9+2/3-3/3-3=6+2/3-3/3-3=3-/3=-/3+3 (pt. frumusete)
b)(/27-4)(3/3+4)=(3/3-4)(3/3+4)=27-16=11
/27=3/3
c) (/2+1)la adoua +2/8=2+2/2+1+2/8=2+2/2+1+2/8=2+2/2+1+4/2=6/2+3
d) (/5-2)la adoua +4(/5-1)=5-4/5+4+4/5-1=8 (-4/5 si 4/5 se anuleaza)