Question

Qual a menor das raizes da equação x2+x-12=0

Answer 1

x² + x - 12 = 0

a = 1, b = 1, c = - 12

Δ = b² - 4 . a . c
Δ = 1² - 4 . 1 . (-12)
Δ = 1 + 48
Δ = 49

$x= \dfrac{-b \pm \sqrt{\Delta} }{2a}$

$x= \dfrac{-1 \pm \sqrt{49} }{2}$

$x'= \dfrac{-1 + 7}{2} \\\\\\x'=3$

$x''= \dfrac{-1-7}{2} \\\\\\x''=-4$


A menor raiz é o -4



Forte abraço!