Question

Tentukan akar persamaannya, tolong di bantu yaa
a. 4 + 4x +1=0
b. 2 - x - 3 =0
c. - x + 1/4 +0

Answer 1

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

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

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


            2x² - x - 3 = 0
   2x² + 2x - 3x - 3 = 0
2x(x + 1) -3(x + 1) = 0
      (2x - 3) (x + 1) = 0

2x - 3 = 0
     2x = 3
      x₁ = 3/2

x + 1 = 0
     x₂ = -1

Himpunan Penyelesaian = {x₁, x₂} = {3/2, -1}