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

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

-13 and 11