Question

solve for x, where x is a real number
√(7x-14)=√(x+15)

Answer 1

\[\sqrt{7x-14}=\sqrt{x+15}\]
First step square both sides! :)

Answer 2

which would eliminate th square roots.

Answer 3

square both sides....
7x - 14 = x+15
7x -x = 15+14
6x = 29

x = 29/6

Answer 4

yeah square both sides and then simplify. and yes it would be invalid if for some value of x the whole thing under root becomes negative.

Answer 5

got it:) just had to make sure i was solving it correctly at the beginning.