Question

1. Himpunan penyelesaian dr persamaan 2x/2+5x+2=0 adlh....

Answer 1

= 2x + 5x + 2 = 0
    2
= x + 5x + 2 = 0
= 6x = -2
= x = -1/3


 

Answer 2

           2x² + 5x + 2 = 0
     2x² + 4x + x + 2 = 0
2x(x + 2) + 1(x + 2) = 0
      (2x + 1) (x + 2) = 0

2x + 1 = 0
      2x = -1
      x₁ = -1/2

x + 2 = 0
    x₂ = -2

Himpunan Penyelesaian = {x₁, x₂} = {-1/2, -2}