Quadratic equation 1.x²-4x=5 2.6x²+5x-4=0

1. x²-4x-5 =0
(x-5) (x+1)

2.( 3x+4)(2x-1)

1)
x² - 4x = 5
x² - 4x - 5 = 0
(x - 5)(x + 1) = 0
x - 5 = 0 atau x + 1 = 0
x = 5 atau x = -1

2)
6x² + 5x - 4 = 0
(2x - 1)(3x + 4) = 0
2x - 1 = 0 atau 3x + 4 = 0
2x = 1 atau 3x = -4
x = [tex] \frac{1}{2} [/tex] atau x = [tex]- \frac{4}{3} [/tex]