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 two numbers which add to give 5 and multiply to give -14.

 
 Oct 12, 2021
 #1
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 two numbers which add to give 5 and multiply to give -14.

 

These are hard till you get the hang of them.

 

Look at the sign of the multiply first.  it is negative, which means that one number must be + and the other is -

 

Now they add to a positive number.  That means that the bigger one is positive

 

Look at the multiply again.

14 = -1 * +14      14 = -2 * +7

there are no other integer possibilities.

-1+14=13  that is no good

-2+7 = 5     BINGO

 
 Oct 12, 2021

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