Question

3. The sum of two integers is -11 and their product is -80. What are the two integers?
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Answer 1

Answer:

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Explanation:

Answer 2

Explanation:

let the integers be x and y

so x+y = -11

x= -11-y

also x.y =-80

(-11-y).y = -80

-11y -y2 = - 80

0= y2 + 11y -80

0= y2 -5y +16y -80

0= y(y-5) +16(y-5)

0= (y+16)(y-5)

so y = -16 or y= +5

if y= -16

x= -11-y = -11-(-16) = -11+16 = 5

if y= 5

x= -11-y = -11-5 = -16