allysonwoolley1 allysonwoolley1
  • 23-02-2018
  • Mathematics
contestada

how do you solve x^2+4x-5=0

Respuesta :

evgeniylevi
evgeniylevi evgeniylevi
  • 26-02-2018
Try this option:
1. root1*root2=-5; root1+root2=-4.
2. root1=-5; root2=1.
answer:1;-5.
Answer Link
waylont3
waylont3 waylont3
  • 18-07-2018

Actually the answer is (-1,5)


x^2 – 4x – 5 = 0

x^2 – 4x = 5

x^2 – 4x + 4 = 5 + 4

(x – 2)^2 = 9

x – 2 = ± 3

x = 2 + 3 and x = 2 – 3

x = 5 and x = –1

{–1, 5}


Answer Link

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