Question

Solve the following equations for x. Identify any extraneous solutions. Show all work.
sqrtx-7+5=11

Answer 1

i have 4 of theses to do and i am having trouble understanding

Answer 2

The sqrt is over?

Answer 3

x-7

Answer 4

subtract 5 and square both sides

Answer 5

so it would be sqrtx-7=9?

Answer 6

now square both sides..

Answer 7

Then get the value of x.
For any problem, identifying extraneous solutions is simple. substitute back and check whether you are getting any absurd result.