Question

A.x² + 4x + 3 = 0
b.x² + 2x - 3 = 0

Tolong kerjakan dengan rumus Persamaan kuadrat

Answer 1

A.
   p + q = 4
   p x q = 3
    p = 1
    q = 3
   (x+p)(x+q) = 0
    (x+1)(x+3) = 0
    x, = -1
    x,, = -3
b.
    p + q = 2
    p x q = -3
   p = 3
   q = -1
   (x+p)(x+q) = 0
   (x+3)(x-1) = 0
   x, = -3
   x,, = 1