Question

Can I get some more help? I'm confused. √2x-7=4

Answer 1

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@Taylorcheer98 what do you think we do first

Answer 2

The 2x-7?

Answer 3

Wait, is it \(\sqrt{2x-7} = 4\) or \(\sqrt{2x} - 7 = 4\) ?

Answer 4

^^

Answer 5

It's the first one. What is the difference between the two?

Answer 6

A huge difference.

Answer 7

It could get you a wrong answer. Always good to clarify :)

Answer 8

Could you tell me the difference between the two

Answer 9

first we square both sides of the equation.

Answer 10

Well, we know that \(\sqrt{2x-7}=4\) is the same as \(2x-7 = 4^2\) , right?

Answer 11

you got this @sammixboo ?

Answer 12

If you want to continue I'll leave :o

Answer 13

=3

Answer 14

its ok

Answer 15

Yes

Answer 16

Well @Taylorcheer98 the first one is easier to solve, the second takes more steps. And you will get 2 different answers. Because notice how the 7 or could not be under the squareroot?

Answer 17

light.

Answer 18

what he said

Answer 19

Yes

Answer 20

OK so we have \(2x-7 = 4^2\)

Let's do the exponent, \(4^2\) first. Do you know what that is equal to?

\(4^2\rightarrow 4\times 4\)

Answer 21

16?

Answer 22

Right so \(2x - 7 = 16\)

Do you know what to do next? Solve this like a regular equation

Answer 23

Ok, let me solve it

Answer 24

OK tell us what you get, so we can check your answer x3

Answer 25

23/2?

Answer 26

Correct!!

Answer 27

Thank you I understand it better'!

Answer 28

=3 if you need anymore help tag me @sammixboo

Answer 29

I definitely will.

Answer 30

Okie dokie!
Welcome to OpenStudy, once again! If you have any concerns on how to use the site, Private Message me! I will reply ASAP

Answer 31

Thank you so much! I appreciate that.

Answer 32

:)