What numbers add up to -5 and multiply to get -90

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03-10-2014
Mathematics

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What numbers add up to -5 and multiply to get -90

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crisforp crisforp · Answer 1 · 2014-10-03T06:08:04+02:00

( -5 + x ) * y = - 90;

1. y = 1 => x = -85; or, y = -1 => x = 95;
2. y = 2 => x = -40; or, y = -2 => x = 50;
3. y = 3 => x = -25; or, y = -3 => x = 40;
4. y = 5 => x = -13; or, y = -5=> x = 23;
5. y = 6 => x = - 11; or, y = -6 => x = 20;
6. y = 9 => x = -5; or, y = -9=> x = 15;
7. y = 10 => x = -4; or, y = -10 => x = 14;
8. y = 15 => x = -3; or, y = -15=> x = 13;
9. y = 16 => x = 0; or y = -16 => x = 10;
10. y = 30 => x = 2; or, y = -30=> x = 8;
11. y = 90 => x = 4; or, y = -90 => x = 6;