my problem is
square root (a+21)-1= square root(a+12) I am kind of stuck on how to solve this as I do not know what to do with -1.
Also the next equation I need help solving is very similar
sqrt (x+2)-7= square root (x+9) Can anyone please help me?
my problem is
square root (a+21)-1= square root(a+12) I am kind of stuck on how to solve this as I do not know what to do with -1.
Also the next equation I need help solving is very similar
sqrt (x+2)-7= square root (x+9) Can anyone please help me?
Use algebra to get on one side. Once you do that, you can square both sides and no more square roots. Now you can solve for . It will be a quadratic equation.
Note: Remember once you get a solution, plug it back in to check. Especially for square root problems, you can get extra "fake" solutions. Always plug in and check.
No, you add to both sides.
You cancel from the side it's on.
If two sides are equal, then if you add the same thing to both sides, they will still be equal.
As in.... 5=5, 5+2=5+2 or 5-2=5-2 etc
therefore
Add to both sides and then subtract from both sides.
Alternatively, subtract from both sides.
Then divide both sides by and square both sides.
You could also go this route...
which means that
If two values are equal, when we subtract them the answer is zero...