Question

12x^2-14=0
solve for x

Answer 1

online homework is saying that the answer is square root of 42/6

Answer 2

any sugestions guys?

Answer 3

:(

Answer 4

so

Answer 5

??

Answer 6

thats the answer, your book might be wrong unless I made a bloo. But I am pretty confident that is correct

Answer 7

are you sure your question is correct @jammal_a

Answer 8

hang on this is better solution.
12X^2=14
x^2= 14/12
x=sqrt(14/12)

Answer 9

but that still gives you not the answer your book presents.

Answer 10

i will screenshot it.

Answer 11

@dominator140 @zaisha

Answer 12

I am not to sure what I am looking at in there mate, I dont even see the equation you presented us with.

Answer 13

if you're still interested in how it was solved... i can show it to you

\[12x^2 - 14 = 0\]
add 14 to both sides
\[12x^2 = 14\]
divide both sides by 12
\[x^2 = \frac{14}{12}\]
simplify
\[x^2 = \frac 76\]
take the square root
\[x = \sqrt{\frac 76}\]
rationalize
\[x = \frac{\sqrt 7}{\sqrt 6} \times \frac{\sqrt 6}{\sqrt 6}\]
simplify
\[x = \frac{\sqrt {42}}6\]

did you get that?

Answer 14

tell me if there's something you don't get in the solution @jammal_a