tashiabrad18 tashiabrad18
  • 04-05-2018
  • Mathematics
contestada

square root 2x+1 +3=0 is x=4 Do you agree? Explain why or why not

Respuesta :

Stiaen
Stiaen Stiaen
  • 04-05-2018
False !

If [tex]x=4:[/tex]

[tex] \sqrt{2(4)+1+3}= \sqrt{12}\\\\\sqrt{12}\neq0[/tex]

In fact, the true answer is [tex]x=-2[/tex]

[tex]\sqrt{2x+1+3}=0\\\\\sqrt{2x+4}=0\\\\2x+4=0\\2x=-4\\x=-2[/tex]

Answer Link
braidlynatkinso
braidlynatkinso braidlynatkinso
  • 04-05-2018
X is not 4
The correct answer would be x=-2
2x+1+3=0
2x+4=0
-4 -4
2x= -4
2 2
X=-2

Hope this helps!
Answer Link

Otras preguntas

what is the prefix of enactment?
SAT Help Jack can paint a house in 5 days, and Richard can paint the same house in 7 days. Working together, how long will it take them to finish the job? How d
HOW TO FIND THE MISSING NUMERATOR IN ANY FRACTIONS LIKE 4/8=  ?/4
how could you compare the energy carried in two different longitudinal waves
Explain why the railroads were not built in a straight line from east to west.
HOW TO FIND THE MISSING NUMERATOR IN ANY FRACTIONS LIKE 4/8=  ?/4
the length of a rectangle is 3 feet less than twice the width of the rectangle. if the perimeter of the rectangle is 324 feet, find the width and the length?
How did the alliances that formed in Europe after world war 2 form an "iron curtain" as described by Winston Churchill in a 1946 speech?
HOW TO FIND THE MISSING NUMERATOR IN ANY FRACTIONS LIKE 4/8=  ?/4
sophia has 3 pink tulips and 3 white tulips. what fraction of sophias tulips are pink