jhanellmorilla
jhanellmorilla jhanellmorilla
  • 24-04-2021
  • Mathematics
contestada

Solve x2 + 8x = 24.

Respuesta :

clarch19
clarch19 clarch19
  • 24-04-2021

Answer:

-10.3 and 2.3

Step-by-step explanation:

use quadratic formula:

-8 ± √8²-4(-24) ÷ 2

= -8 ±√64+96 ÷ 2

= -8 ± √160 ÷ 2

= -8 + 4√10 / 2 and

-8 - 4√10 / 2

which is the same as -4 + 2√10 and -4 + 2√10

which is the same as -10.3 and 2.3

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