simplify: √2(x-√5)
a: 10 √2x
b: 2x√2
c: √2x-√10
d: x√2-√10

Question

anonymous · Answer

Distribute the radical to both the inner terms and tell me what you got??

keana · Answer

@waterineyes though i don't know how !

anonymous · Answer

See,

$$\sqrt{a}(x - \sqrt{b}) = \sqrt{a}.x - \sqrt{a}.\sqrt{b}$$


Here, a = 2 and b = 5

Use this formula...

anonymous · Answer

Have you tried the above formula or you are only looking for answers??

keana · Answer

why are there periods after the a's? @waterineyes

anonymous · Answer

No tell me why are you only bumping the question again and again instead of trying it???

keana · Answer

@waterineyes you mean once .what you said didn't work & idk why there are periods .

anonymous · Answer

Did not work???
Show me your work and then I tell you where you have mistaken..
And I am helping others too...

anonymous · Answer

Now do you want to solve or just looking that someone will come and solve it for you??

keana · Answer

i am trying to answer the problem so don't rush me k

keana · Answer

attachment

keana · Answer

the answer i get doesn't work

anonymous · Answer

Sure take your time...

anonymous · Answer

But what you get???

keana · Answer

$$2√5+25=2x$$

keana · Answer

this is what i get

anonymous · Answer

Yes but you have to remember formula @keana 
How much time has been past since I told you the formula that:

$$\sqrt{a}.\sqrt{b} = \sqrt{a \times b}$$

You get:

$$\sqrt{2}.\sqrt{5}$$

Can you now solve and don't forget the formula after solving the problem please..

anonymous · Answer

In the attachment you have done the right..
Use the above formula to get the answer...

keana · Answer

multiplying ?

anonymous · Answer

What?
Tell me the answer you are getting in the attachment you have attached..
Just tell that and forget about others...

keana · Answer

am i multiplying is what i'm asking

anonymous · Answer

You got right till here..
$$\sqrt{2}.x - \sqrt{2}.\sqrt{5}$$

You have to solve this further..

See use the above formula that is:
$$\sqrt{a}.\sqrt{b} = \sqrt{a \times b}$$

Just use this formula in the answer you get..

keana · Answer

10 ?

anonymous · Answer

Are you sure?
Why you always forget to say it as:
$$\sqrt{10}$$
???

keana · Answer

lazy typing ?

anonymous · Answer

You are right now what option did you get??

keana · Answer

what do you mean by option ?

anonymous · Answer

What is the answer now from the choices given???

keana · Answer

a ?

anonymous · Answer

How dear??

keana · Answer

i don't know what the answer is ! that's why i asked !!

anonymous · Answer

Now tell me finally who got as answer??
$$\sqrt{2}.x -  \sqrt{2}.\sqrt{5} = \sqrt{2}.x - \sqrt{10}$$

Please do me a favour now can you please tell me is it a, b, c or d??

anonymous · Answer

Just reply what are you waiting for??

keana · Answer

i want to see if i can get it without guessing

anonymous · Answer

See =, options in more understandable form:

c option is like this:

$$\sqrt{2x} - \sqrt{10}$$

d is like this:

$$x \sqrt{2} - \sqrt{10}$$

keana · Answer

c ?

anonymous · Answer

is x in root??

anonymous · Answer

Well one thing I want to say that you don't how to solve your previous questions and you are bumping more questions...

anonymous · Answer

The answer is D..
And thanks for your cooperation...