ac4atherybgekni0gh ac4atherybgekni0gh

12-12-2016
Mathematics

contestada

Given the equation Square root of 2x plus 1 = 3, solve for x and identify if it is an extraneous solution.

^ I really don't understand this topic, whatsoever. Could someone help?

Respuesta :

JcAlmighty JcAlmighty

13-12-2016

The answer is 4.

Square root of 2x plus 1 = 3:
[tex] \sqrt{2x+1} =3[/tex]

Square both sides:
[tex]( \sqrt{2x+1} )^{2} =3^{2} \\ \\ 2x+1=9 \\ 2x = 9 - 1 \\ 2x =8 \\ x = 8:2 \\ x =4 [/tex]

Answer Link

Otras preguntas

Solve for x: 2 over 3 (x - 2) = 4x.

what are the three main things that a plant needs to survive?

A 1200 w microwave oven transforms 1.8x10(to the power of 5) J of energy while reheating some food. Calculate how long the food was in the microwave, in mins!?

What policies characterized realpolitik?

tom drinks 4 pints of water a day. how many tanks of water will he drink in 30 days?

of the runners in marathon through northeastern Pennsylvania 94.1% finshed the race .if 2,125 runners started the race how many finished the race

which of the following suggestion is most likely to help you maintain and renew your emotional energy

For the functions f(x) = 2x − 6 and g(x) = 5x + 1, which composition produces the greatest output? Both compositions produce the same output. Neither compositio

What best describes the expression y over 4? Some number divided by 4 Some number times 4 4 more than some number 4 less than some number

What is the best definition for technical writing? a. writing that gives directions b. writing that includes technical terms in a directive fashion c. writin