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Mathematics 17 Online
OpenStudy (anonymous):

How do you get the x out from the square root? 11=0.2 sqrt(x+ 4.5/2.6)+5

OpenStudy (joannablackwelder):

First solve the equation for the square root. The square both sides of the equation.

OpenStudy (anonymous):

do I square the .2 and 5 as well?

OpenStudy (joannablackwelder):

You can do it that way, but you are miking it harder than it needs to be. The first step is to solve the equation for the square root. Do you know how to do that?

OpenStudy (joannablackwelder):

*making

OpenStudy (anonymous):

I thought you square the square root and the 11. to cancel out the square root.

OpenStudy (nikato):

1. Subtract 5 from both sides. 2. Divide both sides by 0.2

OpenStudy (anonymous):

but the answer im getting is too big.

OpenStudy (joannablackwelder):

When you do that step you have to square the whole side. So it is easier to solve for the square root like nikato said, then square both sides.

OpenStudy (nikato):

What did u get after doing those 2 steps

OpenStudy (anonymous):

the 1st 2? I got 30=sqrt(x+4.5/2.6)

OpenStudy (anonymous):

I got 827 as my final answer and it just seems really wrong.

OpenStudy (nikato):

Ok, then square both sides

OpenStudy (nikato):

Also, is it x+4.5/2.6 or (x+4.5)/2.6

OpenStudy (anonymous):

x+4.5/2.6

OpenStudy (anonymous):

what do you mean by square both sides? ive already done that. :/

OpenStudy (nikato):

Squaring both sides will give u 900=x+4.5/2.6

OpenStudy (anonymous):

i did that, but it still makes my answer 827.

OpenStudy (anonymous):

wait, no it would make it 898.27.

OpenStudy (nikato):

Then, maybe that's ur answer

OpenStudy (anonymous):

but its too big for what i need... oh well, thanks for trying.

OpenStudy (nikato):

It's a really nasty number, but if u plug it back in, it actually works

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