+0  
 
0
326
2
avatar

what multiplies to get -143 and adds up to -2?

Guest Feb 24, 2015

Best Answer 

 #2
avatar+92805 
+5

How did CPhill work this out?

 

what multiplies to get -143 and adds up to -2?

They mult to a negative so one is negative and one is positive

If they add up to -2 the numbers must be close together and the 'bigger' one is negative

sqrt(143)=almost 12

143/11=13

so the numbers are -13 and +11

Melody  Feb 24, 2015
 #1
avatar+87309 
+5

-13 and 11

 

CPhill  Feb 24, 2015
 #2
avatar+92805 
+5
Best Answer

How did CPhill work this out?

 

what multiplies to get -143 and adds up to -2?

They mult to a negative so one is negative and one is positive

If they add up to -2 the numbers must be close together and the 'bigger' one is negative

sqrt(143)=almost 12

143/11=13

so the numbers are -13 and +11

Melody  Feb 24, 2015

4 Online Users

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.