Question

Could someone explain to me how to solve radical equations?

Answer 1

ans=4

Answer 2

Well how did you get that?.. I want to know how..

Answer 3

You can get rid of a square root by squaring. (Cube roots by cubing, etc)

Answer 4

Okay so it would turn into x^2+25?

Answer 5

Example: solve √(2x+9) - 5 = 0

isolate the square root: √(2x+9) = 5
square both sides: 2x+9 = 25

Answer 6

Now it should be easier to solve!

Move 9 to right: 2x = 25-9

Divide by 2: x = 16/2 = 8

Answer: x = 8

Check: √(2·8+9) - 5 = √(25) - 5 = 5 - 5 = 0

Answer 7

Okay so would my problem go to x+5-1=2

Answer 8

yes

Answer 9

Okay which would turn into..
-2?

Answer 10

x=-2

Answer 11

yes

Answer 12

So the answer is -2?

Answer 13

Above you said 4... So is it squared or just -2?