angeliaminervini716 angeliaminervini716
  • 01-04-2020
  • Mathematics
contestada

Solve.

x² + 4x + 4 = 18



​ x=−4±32‾√ ​
​ x=2±32‾√ ​
x=−2±32‾√
​ x=4±92‾√ ​

Respuesta :

lawrencecimora
lawrencecimora lawrencecimora
  • 01-04-2020

Answer:

x=−2+3√2

Step-by-step explanation:

x2+4x+4−18=18−18

x2+4x−14=0

For this equation: a=1, b=4, c=-14

1x2+4x+−14=0

x=

−b±√b2−4ac

2a

x=

−(4)±√(4)2−4(1)(−14)

2(1)

x=

−4±√72

2

x=−2+3√2 or x=−2−3√2

Answer Link
elmono111
elmono111 elmono111
  • 13-10-2020

Answer:

Step-by-step explanation:

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Answer Link

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