Question

Soal pertemuan 2 nomor 2-5 .... tolong dijawab pliss hari dikumpul tolongggg banget

Answer 1

2. x2+4x+3 = 0
    (x+3)(x+1) = 0
    x = -3 atau x = -1

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

4. a= 3 | b = -7 | c = 2
    x12 = (-b +-  ) / 2a
           = 7 +- () / 6
           = 7 +-  / 6
   x1 = 7+5 / 6 = 2
   x2 = 7-5 / 6 = 1/2

5. 3x2-10x-8=0
    (3x+2)(x-4) = 0
    x = - 2/3 atau x = 4