Question

-x^+2x+3x=0 conta completa

Answer 1

Resposta:

X² + 2 x - 3 = 0

Δ= b² - 4.a.bΔ = 2² - 4 . 1 . -3

Δ = 4 + 12

Δ = 16 ⇒ √16 = 4x

= - b + ou - 4/2.1x

´= -2 + 4 / 2x

´= 2/2 = 1x

´´ = -2 - 4 ...