Question

Helpp fast dau coroana

Answer 1

Răspuns:

1.A=-1amplificam cu3<_2x+1 /3<3amplificam cu 3/×3

A= - 3<_2x+1<9 /-1

A= - 4<_ 2x< 8/:2

A= - 2<_ x<4

A= [-2;4)

B= |x-2| <_3

B= 3<_ x-2<_3 /+2

B= 5<_ x<_ 5

B= [5]

A U B= [-2;5]

A n B= (4;5]

2. N= 3-2√3+1-(3-4)-3+2√3 +3

N= 3-2√3+1+1-3+2√3+3

N= 2+3

N= 5

Explicație pas cu pas:

Sper ca te am ajutat!!