Question

VA ROG SA MA AJUTATI LA CELE 2 EXERCITII! ! ! ! ! Nu conteaza daca nu sunt amandoua cel putin unu.......

Answer 1

5)
2f(x)=2*(x+3)=2x+6
3g(x)=3*(2x-1)=6x-3
(2x+6)+(6x-3)=-5
8x+3=-5
8x=-5-3
8x=-8
x=-8:8
x=-1

Answer 2

-Δ / 4a= 5
Δ= 64 +12 m
a=m
$\frac{-64-12m}{4m}=5$       |*4m
-64-12m=20 m
32m = -64
m= -2

5. 2x+6+6x-3=-5
    8x+3=-5
    8x= -8
    x= -1