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Mathematics 13 Online
OpenStudy (xoxolove456):

Help with this problem

OpenStudy (xoxolove456):

Is 8 correct ?

pooja195 (pooja195):

What's the question?

OpenStudy (xoxolove456):

I posted a pic

OpenStudy (xoxolove456):

Can u see it

OpenStudy (agent0smith):

When you take the square root of a number, is the result ever negative? In this case, your number is 4-x.

OpenStudy (xoxolove456):

So it would just be 4-X?

OpenStudy (xoxolove456):

??????

OpenStudy (agent0smith):

Read my last post again. Answer the question I asked. Then think about what it means, for your equation.

OpenStudy (agent0smith):

When you take the square root of a number, is the result ever negative?

OpenStudy (xoxolove456):

No

OpenStudy (xoxolove456):

It's not

OpenStudy (agent0smith):

Now look at your equation.

OpenStudy (xoxolove456):

So is It no solution

OpenStudy (xoxolove456):

Im so confused sorry

OpenStudy (rahulmr):

Square both sides 4−x=4 Cancel 4 on both sides −x=0 Multiply both sides by −1 x=0 Check solution When x=0, the original equation √4−x=−2 does not hold true. We will drop x=0 from the solution set. Therefore, No solution exists

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