Respostas

2013-06-03T16:20:56-03:00

x²-3x+4x-12-14 = x-2-x²=2x

x²-3x+4x-2x-x-26 = -2-x²

x²-3x+4x-3x-26 = -2-x²

x²-6x+4x-26 = -2-x²

2x²-2x-24 = 0

 

delta = b²- 4ac

delta = 2² - 4.2. -24

delta =raiz de  196

delta = 14

 

¹x = 2+14/4

x¹ = 4

 

x² = 2-14/4

x² = -3