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natali 33 [55]
2 years ago
8

Find the value of x²+y² if x+y=9 xy=14​

Mathematics
1 answer:
vekshin12 years ago
8 0

Step-by-step explanation:

It's a system of equations.

From the first one we isolate x:

x = 9-y

And we substitute in the second one:

(9-y)y = 14

-y^2 + 9y - 14 = 0

y^2 - 9y + 14 = 0

D = 25

y1/2 = (9 +- 5)/2 = 2 or 7

y = 2 => x = 7

y = 7 => x = 2

x^2 + y^2 = 7^2 + 2^2 = 53

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On a coordinate plane, point A is located at (7, 4), and point B is located at (-8, 4). What is the distance between the two poi
wel

Answer:

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I need this answered its due soon
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Ac is tangent to circle o at point c what is the length of ac?
MissTica

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