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/sci/ - Science & Math

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3321779 No.3321779 [Reply] [Original]

the answer is 4√7

how do i transform √112 into that?

>> No.3321784

Just telling me what subject is this so i can google&study it would help alot :)

>> No.3321787

>>3321784

>what subject

square roots

>> No.3321789
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3321789

<span class="math"> 4\sqrt7 = \sqrt16 * \sqrt7 = /sqrt112 [/spoiler]

i hope the latex doesnt fuck up...

>> No.3321790

Factor 112 into 7*16

>> No.3321794

<span class="math">\sqrt{112}=\sqrt{(16)(7)}=\sqrt{16}\sqrt{7}=4\sqrt{7}[/spoiler]

>> No.3321798

Thank you guys alot <3

>> No.3321807

sqrt(16) * sqrt(7) = sqrt(112)
4 * sqrt(7) = sqrt(112)

>> No.3321815

Factor it.

112 = 2*56
56 = 2*28
28 = 2*14
14 = 2*7

So, 112 = 2*2*2*2*7 = (2^2)(2^2)(7)

<span class="math"> \sqrt(112) [/spoiler], using properties of square roots, can be rewritten as <span class="math"> \sqrt{(2^2)(2^2)(7)} = \sqrt{2^2} \sqrt{2^2} \sqrt{7} [/spoiler]

Now, you just simplify.

>> No.3321853

>homework thread that /sci/fags know how to do
Here's your answer have a nice day :-)
>homework thread that /sci/fags aren't smart enough for
GO DO UR OWN HOMEWORK how are you going to learn if you just ask us?

>> No.3321950

>>3321853
as you can see, i had solved almost everything, i just didn't knew how to transform √112 into 4√7, that's 5º grade elementary school stuff and i forgot it, i also didn't remembered the subject to look after it.