DestinyKiara99
DestinyKiara99 DestinyKiara99
  • 21-11-2015
  • Mathematics
contestada

Solve x^2 + 6x = 24.
a. −3 ± square root 21
b. −3 ± square root 34
c. −3 ± square root 15
d. −3 ± square root 33

Respuesta :

klhenriqueleal
klhenriqueleal klhenriqueleal
  • 21-11-2015
Hello DestinyKiara99 o/
We can solve this equation using the quadratic formula
Check it out...

x² + 6x - 24 = 0       

Δ = 6² - 4.1.(-24)
Δ = 36 + 96
Δ = 132

x = -6 +/- √132    x' = -3 + √33
      --------------   /
              2          \ 
                            x'' = - 3 - 
√33
The correct answer is the letter D
I hope this help =)
Answer Link

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