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Help anyone?? PLSS ?? ill love u 4eva

Help anyone?? PLSS ?? ill love u 4eva-example-1

1 Answer

3 votes

Answer:

4 and 5

Explanation:

xy = 20

x + y = 9 ⇒ x = 9 - y

y(9 - y) = 20

9y - y² = 20

y² - 9y + 20 = 0

D = ( - 9)² - 4(1)(20) = 81 - 80 = 1


y_(1) = (9 + 1) ÷ 2 = 5


y_(2) = (9 - 1) ÷ 2 = 4

The numbers are 4 and 5

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