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Elan Coil [88]
3 years ago
6

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

Mathematics
1 answer:
velikii [3]3 years ago
8 0

Answer:

<em>4</em> and <em>5</em>

Step-by-step 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 <em>4</em> and <em>5</em>

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