Question

√(t-5) = 2

Answer 1

I'm confused about how to solve this?

Answer 2

Square both sides to undo that radical. :)
You are trying to get to the t so undo the things around it.

Answer 3

In order to solve for t u have to isolate t.
1.Square both sides
2.Add 5 to both sides.

Answer 4

okay

Answer 5

Then t = 9

Answer 6

\[\sqrt{t-5} = 2\]
\[t-5 = 4\]
\[t = ?\]

Answer 7

yup perfect:)

Answer 8

right :)

Answer 9

Now what about one like x = √(56-x)

Answer 10

whenever u have square roots on one side try to remove them by squaring both sides.
Can u plz tell me vat u get when u square both sides?

Answer 11

x^2= 56 - x

Answer 12

then would i use quadratic formula

Answer 13

yup right:) good work.:)
Nw bring all the terms to one side.
Then use quadratic formula to find x.
Quadratic formula is
\[x=\frac{ -b\pm\sqrt{b^2-4ac} }{ 2a }\]

Answer 14

-8 and 7

Answer 15

x = -8 and 7

Answer 16

yup perfect:) great work:)

Answer 17

Thanks!

Answer 18

welcome:)