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

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

Guest Feb 24, 2015

#2
+92215
+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
Sort:

#1
+85726
+5

-13 and 11

CPhill  Feb 24, 2015
#2
+92215
+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

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