Question

What do you get for.. (x - 9)^2 = 1??

Answer 1

How do you undo the square?

Answer 2

What action must you perform to both sides in order to undo that square on the left?

Answer 3

Square root

Answer 4

Yep. You need plus or minus.

Answer 5

You must solve it.
(x-9)^2 = 1
√Both sides..
√(x-9)^2 = √1
x-9 = √1
since √1 is really just 1...
x - 9 = 1
+9 +9
------------
x = 10

Answer 6

A plus or minus, for what?

Answer 7

So you have
\[x-9=\pm 1 \text{ correct?}\]

Answer 8

Yes x = 10,8

Answer 9

@chandhooguy Please in the future let the asker come to the answer themselves. Let them do some work. Thanks.

Answer 10

How would it equal '10,8'?

Answer 11

You have two equations x-9=1 or x-9=-1
Do you know how to solve either of these?

Answer 12

How do you get two equations..?

Answer 13

Because we have absolute value

Answer 14

\[\sqrt{x^2}=|x|\]

Answer 15

What's that supposed to be

Answer 16

=x when x>=0
=-x when x<0