SOLUTION: Solve where x is a real number. square root of x + 4 = 1 + square root of x - 1
Algebra
->
Square-cubic-other-roots
-> SOLUTION: Solve where x is a real number. square root of x + 4 = 1 + square root of x - 1
Log On
Algebra: Square root, cubic root, N-th root
Section
Solvers
Solvers
Lessons
Lessons
Answers archive
Answers
Click here to see ALL problems on Square-cubic-other-roots
Question 39021
:
Solve where x is a real number.
square root of x + 4 = 1 + square root of x - 1
Answer by
fractalier(6550)
(
Show Source
):
You can
put this solution on YOUR website!
sqrt(x+4) = 1 + sqrt(x-1)
square both sides
x+4 = 1 + 2*sqrt(x-1) + x - 1
4 = 2*sqrt(x-1)
2 = sqrt(x-1)
4 = x - 1
x = 5
and it checks too...