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Freda McKenzie

Lvl 10
3y ago
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Wiki User

13y ago

Assuming we are looking for two numbers here:

1. x * y = -160

2. x + y = 36

Rewriting 2. gives

3. y = -x + 36

Substituting 3. into 1 gives:

x * (-x + 36) = -160

-x2 + 36x = -160

-x2 + 36x + 160 = 0

(x + 4) (-x + 40) = 0

x + 4 = 0

x = -4

and

-x + 40 = 0

x = 40

Therefore the two numbers are -4 & 40.

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Q: What multiplies to get -160 and adds up to 36?
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