( x - 4 ) ^ 2 = 625 Take square root to both sides
+ OR - ( x - 4 ) = 25
1 solution:
x - 4 = 25 Add 4 to both sides
x - 4 + 4 = 25 + 4
x = 29
2 solution:
- ( x - 4 ) = 25
- x + 4 = 25 Subtract 4 to both sides
- x + 4 - 4 = 25 - 4
- x = 21 Multiply both sides by - 1
x = - 21
The solutions are:
x = - 21 and x = 29
I'm a little confused at how to do this problem, could you check this to make sure I have it done right ?
(x-4)^2 = 625
(undo square by square root)
(x-2) = 25 (x+2) = 25
x = 27 x = 23
4 answers
Thank you, but why wouldn't the 4 be square rooted
You can square rooted only expresiion between brackets, not single number.
Ohh, thank you