+0  
 
0
32
4
avatar+236 

How di I turn a decimal like -4.646 into a number like -2 - sqrt(7)

Sort: 

4+0 Answers

 #1
avatar+78643 
+3

Notice that 

 

-2 - √ 7  is an irrational number  [ can't be expressed as a fraction]

 

But    -4.646   is rational   [ can be expressed as a fraction ]

 

So......it's impossible to turn a rational into an irrational  -  and vice-versa......

 

 

cool cool cool

CPhill  Nov 2, 2017
 #2
avatar+236 
+2

well i had 4.646 rounded...desmos doesn't go very deep into decimals for me XD

 #3
avatar+78643 
+1

Were you trying to solve an equation,OBT????

 

If so...post the problem and we'll see if we can solve it

 

cool cool cool

CPhill  Nov 2, 2017
 #4
avatar+236 
+1

i figured it out, don't trust desmos XD

 

thanks anyway! i have no idea how many of my questions you have answered, but it is definitely a lot!


9 Online Users

avatar
avatar
We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details