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3 years ago

The sum of two integers is 8 and their product is -20.What are the integers?

Mathematics

1 answer:

emmasim [6.3K]3 years ago

8 0

Answer:

The answer to your question is

x = -2 and y = 10 or x = 10 and y = -2

Step-by-step explanation:

x + y = 8 (1) from (1) x = 8 - y

xy = - 20 (2)

Solve them by substitution

(8 - y) y = - 20

8y - y² = -20

y² - 8y - 20 = 0

( y - 10) (y + 2) = 0

y - 10 = 0 and y + 2 = 0

y1 = 10 y2 = -2

x1 = 8 - 10 x2 = 8 - -2

x1 = -2 x2 = 10

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3 years ago

The sum of two integers is 8 and their product is -20.What are the integers?​

The sum of two integers is 8 and their product is -20.What are the integers?