Question

solve the equation for x square root of x-3= 4 show work?

Answer 1

square both sides

Answer 2

\[x^{2}+9=16\]

Answer 3

that doesnt work?

Answer 4

If u square a square root, you get what is under the radical

Answer 5

x * sqrt(x-3) - square this

Answer 6

No, it's just sqrt(x-3)

Answer 7

sqrt(x-3)=4 i need to find out what x is

Answer 8

Square it..

Answer 9

If u square a square root, you get what is under the radical

Answer 10

still have no idea what you mean?

Answer 11

eq root 2 squared is 2

Answer 12

\[\sqrt{number^2}=number\]

Answer 13

True, but different to here...

Answer 14

\[(\sqrt{number})^2=number\]

Answer 15

\[\sqrt2^2 =2\]

Answer 16

\[\sqrt{x-3}^2 =\]

Answer 17

oh ok i got \[x=13 \] because \[\sqrt{13+3}=\sqrt{16}=\]

Answer 18

4

Answer 19

is that correct?

Answer 20

x-3 is the left hand side squared, agree?

Answer 21

\[\sqrt{x+3}^{2}\]

Answer 22

is that what you are asking

Answer 23

What's that?

Answer 24

Here is your question

square root of x-3= 4

Answer 25

yes that is the problem

Answer 26

Do you agree that the square of the left hand side is x-3?

Answer 27

yes

Answer 28

x-3=16 x=19

Answer 29

And the square of the right hand side is 16.

Answer 30

mathballet is a genius!

Answer 31

thx

Answer 32

How did u do it?

Answer 33

im even more confused

Answer 34

\[\sqrt{x-3}=4\]
\[ x-3= 4^{2}\]\[x-3=16\]

Answer 35

I believe this is where we had got to before the interruption.

x-3=16

Answer 36

x=16+3 x=19

Answer 37

duz it help

Answer 38

SO mathballet used considerable math expertise in transferring the 3 to the other side.

Answer 39

it is x+3 not x-3 in the sqrt

Answer 40

crap i wrote it wrong

Answer 41

but u posted sqrt x-3

Answer 42

ok it is \[\sqrt{x+3}=4\] what is x

Answer 43

That looks familiar, third time lucky?

Answer 44

that is the problem sorry :D

Answer 45

square it..

Answer 46

=\[\sqrt{x+3}=16 \] yes?

Answer 47

U have squared a square root, that get's rid of the square root.

Answer 48

\[ x+3= 4^{2}\]

Answer 49

x+3=16

Answer 50

x=16-3 x=13

Answer 51

so it is just \[x+3=16\]
\[x=16-3=13 \]
x=13

Answer 52

yay i got it right thanks a lot

Answer 53

\[\huge \checkmark\]

Answer 54

yup

Answer 55

Actually..
\[\sqrt{a^2} = |a|\]

Answer 56

But it works out fine in this case.