Question

solving radical equations

Answer 1

Get the radical alone on one side, and then square both sides

Answer 2

ok but how do I do that? could you show me?

Answer 3

Subtract 4 from both sides first

Answer 4

ok. im writing this in my notebook, Im not that great in math -.-

Answer 5

(x+2)=x-4?

Answer 6

Where did the radical go?

Answer 7

ahh sorry about that. would this be correct? \[\sqrt{x+2}=x-4\]

Answer 8

Right, now when you square both sides it will eliminate the radical

x+2=(x-4)^2

Answer 9

alright, then what do I do from there?

Answer 10

Well multiply everything out, then get it equal to 0. You'll have a quadratic to factor

Answer 11

x+2=x^2-8x+16
0=x^2-7x+14