Question

A wee bit of help please? It's Algebra!

Answer 1

\[\sqrt{2x-1}=3\\to \ the \ power \ of \ two \\2x-1=9 \rightarrow2x=10\rightarrow x=5\\check \\x=5 \rightarrow \sqrt{2(5)-1}=3 \\ok\]

Answer 2

\[\sqrt{2x-1}+3=0 \rightarrow \sqrt{2x-1}=-3\rightarrow \\2x-1=(-3)^2=9 \\2x-1=9 \\2x=10\\x=5\\check\\ \sqrt{2(5)-1}=3\neq-3\\\]
it hast not solution

Answer 3

I can't view all of those equation symbol thingies. @amoodarya

Answer 4

"thingies" whats that mean ?

Answer 5

I cannot see the equation symbols.

Answer 6

are you using a computer ? or mobile device

Answer 7

Computer.

Answer 8

I got it. Thanks :)

Answer 9

really you got it ?

Answer 10

Wait, no wrong question. I am so confused.
Can you write it again without using equation symbols?

Answer 11

@amoodarya

Answer 12

i send it as a picture
do you see now ?

Answer 13

Yes! Thank you :)

Answer 14

for better understanding
solve these equation
\[\sqrt{x}-x=0 \rightarrow x=0 , 1 \\\]
both of them are correct
\[\sqrt{x}+x=0 \rightarrow x=0 , 1 \]
x=0 ok
x=-1 is not correct