petitkatie705 petitkatie705
  • 09-11-2020
  • Mathematics
contestada

Solve x ^ 2 + 10x = -21.
x = 7 and x = 3
x = -7 and x = -3
x = - 7 and x = 3
x = 7 and x = -3

Respuesta :

Smilex Smilex
  • 09-11-2020

Answer:

X = -7, -3

(AKA B)

Answer Link
mxhnoor mxhnoor
  • 09-11-2020

Answer:

x= -7 and x= -3

Step-by-step explanation:

x^2 + 10x = -21

= X^2 + 10x + 21  (Bring the -21 to the other side to make it positive)

factor the equation...

= (x+7)(x+3)

x= -7 and x= -3

if you need help on how to factor I can help

Answer Link

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good job