Question

Help on solving the first step of this equation?

Answer 1

square both sides ..

Answer 2

if you add 4 to both sides, it wouldn't help, because the "+ 4" would be outside of the square root symbol, not under it.

Answer 3

no .. for the second i would go with adding 4 to both sides then squaring it

Answer 4

you see its better to isolate the square root and then squaring

Answer 5

for the first one you should square..
for the second you should add 4

Answer 6

no adding 7 to both sides wont do any good ..
since it wont change anything about the square root

\[\sqrt{x-7}+7 \neq \sqrt{x}\]

Answer 7

yes it is good ..

Answer 8

for me its the same .. you can either divide both sides by 2 or square both sides

Answer 9

yes .. go with this

Answer 10

yw but you did it by yourself :)