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:

Ver imagen elmono111
Answer Link

Otras preguntas

An animal's somatic cells contain 2n chromosomes. What happens to the number of chromosomes in the animal's gametes ? A) The number is increased to 4n by mitosi
Use the net to find the surface area of the prism.
PLS HELP ME WITH THIS QUESTIONNN
which choice is equivalent to the quotient shown here when x > 0
2. Give three examples of informal amendments to the Constitution
plz help me ASAP. I don't understand this.​
Yasmine is having a birthday party with snacks and activities for her guests. At one table six people are sharing four-fifths of a pizza. What equal-sized porti
3^8 x 3^4 / 3^2 x 3^8
If Peter withdrew $47.27 from the bank and deposited $598, how would his bank account change? (Indicate how much his account would have increased or decreased)
Mr. Sheffield earns 2680per month after taxes. He budgets 3/10 of his income for his mortgage, 15% for food and clothing, 13% for utilities, 1/8 for his car pay