What two numbers add up to -7 but multiply to -18

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asked Sep 7, 2015 90.6k views

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Pablo Marcano · Answer 1 · 2015-09-12T03:22:30+0000

Since the two numbers multiply to form a negative number, we know one has to be positive and the other has to be negative. The only numbers that can add up to -7 and also multiply to -18 are 2 and -9.
-9+2=-7
2×-9=-18

What two numbers add up to -7 but multiply to -18

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